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Articles 2671 - 2700 of 33337

Full-Text Articles in Agriculture

Research Progress On Extraction Methods And Biological Activities Of Korean Pine Seed Oil, Chen Ping, Wang Jin, Li Hua Jul 2024

Research Progress On Extraction Methods And Biological Activities Of Korean Pine Seed Oil, Chen Ping, Wang Jin, Li Hua

Food and Machinery

The natural vegetable oil known as Korean pine seed oil is well-known for its high content of being various unsaturated fatty acids, including oleic, linoleic and pinopuric acid. It has been proved that Korean pine seed oil has several physiological benefits such as lowering blood lipids, enhanceing immunity, anti-inflammation, anti-oxidation, enhancing insulin sensitivity, and anti-tumor. This review summarized the extraction methods and pharmacological effects of Korean pine seed oil in recent years, and put forward good suggestions for its application in edible oil and industrial production.

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Research On The Law Of Impurity Removal Of Soybean Concentrated Lecithin And Substances Affecting Its Transparency, Fang Suqiong, Zhu Dongqi, Chen Wenrong, Yang Jiguo Jul 2024

Research On The Law Of Impurity Removal Of Soybean Concentrated Lecithin And Substances Affecting Its Transparency, Fang Suqiong, Zhu Dongqi, Chen Wenrong, Yang Jiguo

Food and Machinery

Objective: This study aimed to explore the impurity removal law of soybean lecithin concentrate, analyze and identify the substances that affect the transparency of soybean lecithin concentrate. Methods: Using food-grade soybean lecithin concentrate as raw material and light transmittance as the main evaluation index, the effects of ceramic membrane pore size, material-liquid ratio, solvent system （n-hexane, n-hexane-anhydrous ethanol） and solvent ratio on impurity removal of soybean lecithin concentrate were investigated. Moreover, the collected impurities and soybean concentrated lecithin before and after impurity removal were analyzed and identified by lipidomics. Results: In the system of n-hexane-anhydrous ethanol, …

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Analysis Of Physical And Chemical Indicators And Volatile Composition Changes During Aging Of Fuyuxiangxing Crude Baijiu, Lu Mengsi, Yu Ji, Yu Bing, Liang Chaoyu, Yao Maojun Jul 2024

Analysis Of Physical And Chemical Indicators And Volatile Composition Changes During Aging Of Fuyuxiangxing Crude Baijiu, Lu Mengsi, Yu Ji, Yu Bing, Liang Chaoyu, Yao Maojun

Food and Machinery

Objective: This study aimed to optimize the aging technology of Fuyuxiangxing crude Baijiu and improve its quality. Methods: Testing and analyzing the new wine and the Fuyuxiangxing crude Baijiu aged for 1, 3, 5, 8 and 10 years allowed for the analysis of the physicochemical indexes such as pH, conductivity, viscosity, total acid and total ester. Additionally, the primary volatile flavor components of the six samples were qualitatively assessed using GC and GC-MS, and 26 volatile flavor components of the samples were quantitatively assessed using the external standard method. Results: With the increase of aging time, the conductivity increased, the …

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Effects Of Lipid Concomitants On The Stability Of Rapeseed Oil Nanoemulsions, Zhao Wenshuo, Tang Zhonghai, Guo Shiyin, Xiao Hang, Fan Wei Jul 2024

Effects Of Lipid Concomitants On The Stability Of Rapeseed Oil Nanoemulsions, Zhao Wenshuo, Tang Zhonghai, Guo Shiyin, Xiao Hang, Fan Wei

Food and Machinery

Objective： Clarifying the effects of lipid co-passengers on the stability of rapeseed oil emulsions and prepare high-stability nano-emulsions. Methods： The endogenous lipidassociated compounds of rapeseed oil were subjected to column chromatography filtration, followed by various concentration gradient re-addition. High-pressure microfluidization was utilized to prepare nanoemulsions, which were subsequently characterized. The influence of lipid associated compound content on the stability of rapeseed oil emulsions was also investigated. Results: The preparation of rapeseed oil nanoemulsions reached optimal conditions when the α-tocopherol content was 292 mg/kg, rapeseed polyphenols content was 32 mg/kg, β-sitosterol content was 6 712 mg/kg, and β-carotene …

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Machine Learning Prediction Of Copper Ion Interference With Mercury Ion Fluorescence Signals In Food Heavy Metal Detection, Song Fangliang, Liang Ying, Dong Jie, Wang Xuejie, Qian Jie Jul 2024

Machine Learning Prediction Of Copper Ion Interference With Mercury Ion Fluorescence Signals In Food Heavy Metal Detection, Song Fangliang, Liang Ying, Dong Jie, Wang Xuejie, Qian Jie

Food and Machinery

Objective: To construct an artificial intelligence prediction model to predict the selectivity of fluorescent probes for Hg2+ in a complex food testing environment in the presence of Cu2+ interference. Methods: Fluorescent probe technology combined with seven advanced classical machine learning models was used to predict and analyze the selectivity of the probe for Hg2+ in the presence of Cu2+ interference, and to compare the prediction effect of each model and select the optimal model. Results: Efficient models with accuracies of 0.786 and 0.810 in the cross-validation and test sets were successfully established based on Molecular 2D …

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Determination Of Seven Nicotinamide Compounds In Health Products, Wu Ziling, He Minheng, Huang Jiale, Cai Xiayi, Sun Wenwen Jul 2024

Determination Of Seven Nicotinamide Compounds In Health Products, Wu Ziling, He Minheng, Huang Jiale, Cai Xiayi, Sun Wenwen

Food and Machinery

Objective： This study aimed to establish an ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) method for simultaneous determination of 7 nicotinamide compounds in health food. Methods： The samples were dissolved in 10% methanol water, extracted by ultrasonic, and 10 mmol/L ammonium acetate-acetonitrile was used as the mobile phase of gradient elution. The seven nicotinamide compounds were monitored by ESI, positive and negative ion scanning mode, and multiple reaction monitoring (MRM) mode. Results： The 7 nicotinamide compounds showed good linearity in the mass concentration range, and the correlation coefficients were greater than 0.996. The limit of detection (LOD) was 0.075~0.600 mg/kg, the …

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Agile Innovation And Application Of Food Safety Supervision Mode, Zhang Yi Jul 2024

Agile Innovation And Application Of Food Safety Supervision Mode, Zhang Yi

Food and Machinery

As innovative thinking, the concept of agile governance focuses on rapid response, efficiency, and human nature. Applying agile governance to food safety supervision will help to optimize the food safety supervision model and improve its efficiency. Based on agile governance thinking, the innovative application of agile thinking was proposed from three aspects: regulatory objectives, regulatory tools and regulatory subjects.

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Research And Development Of Multifunctional Cooking Test Platform Combining Negative Pressure And Superheated Steam, Zeng Mingjian, Zhao Yadong, Xu Fengying, Liu Tianyi, Zhang Peiyao, Jiang Zhuo Jul 2024

Research And Development Of Multifunctional Cooking Test Platform Combining Negative Pressure And Superheated Steam, Zeng Mingjian, Zhao Yadong, Xu Fengying, Liu Tianyi, Zhang Peiyao, Jiang Zhuo

Food and Machinery

Objective: To design a multifunctional cooking experimental platform with negative pressure and superheated steam, providing consumers with greener, healthier, and more diverse cooking methods. Methods: The research status of integrated cooking equipment was analyzed, and the application status of superheated steam and negative pressure technology in the food industry was summarized and analyzed. The performance parameters of the multifunctional cooking experimental platform were determined. Based on the characteristics of each function of the experimental platform, the cooking chamber, furnace door and other components were designed, and the overall plan of the experimental platform was developed. Results: The multi-functional cooking experimental …

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Grading Crayfish By Estimating The Proportion Of Crayfish Head And Pincers Based On Deeplab V3+, Wang Zihao, Hu Zhigang, Fu Dandan, Jiang Yajun Jul 2024

Grading Crayfish By Estimating The Proportion Of Crayfish Head And Pincers Based On Deeplab V3+, Wang Zihao, Hu Zhigang, Fu Dandan, Jiang Yajun

Food and Machinery

Objective: To achieve reasonable and effective grading of live crayfish, and improve the work of grading crayfish. Methods: The construction of crayfish image shooting platform, to obtain the original image of crayfish, and the semantic segmentation dataset which segmented the three parts of the crayfish head, crayfish pincers, and crayfish tail was created. The correlation between the actual weight of three parts and the corresponding pixel size in the dataset was analyzed, and a new grading standard for crayfish which was according to the proportion of head and pincers in the whole crayfish was summarized. The DeepLab V3+ neural network …

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Development Of High Efficiency Hazelnut Shell Breaking Machine, He Ting, Liu Ke, Zhang Rui, Ren Guangyue, Liu Zhaohan Jul 2024

Development Of High Efficiency Hazelnut Shell Breaking Machine, He Ting, Liu Ke, Zhang Rui, Ren Guangyue, Liu Zhaohan

Food and Machinery

Objective: In order to solve the phenomenon of low mechanical shelling efficiency and high kernel breakage rate of hazelnut, a vertical cone shell breaking machine was designed with automatic adjustment of clearance through compression spring. Methods: The key structure of the shell breaker was composed of three core components: the vertical cone inner roller, the slatted screen outer roller and the pressure spring device, and the stress of the hazelnuts in the shelling cavity of the shell breaker was analyzed. Results: The main parameters of the vertical cone hazelnut shell breaker were determined: the taper of the uniform cone was …

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Non Destructive Detection Of Kiwifruit Sugar Content Based On Improved Woa-Lssvm And Hyperspectral Analysis, Zhang Kai, Zhu Lifang, Li Rulin, Wang Ziyi Jul 2024

Non Destructive Detection Of Kiwifruit Sugar Content Based On Improved Woa-Lssvm And Hyperspectral Analysis, Zhang Kai, Zhu Lifang, Li Rulin, Wang Ziyi

Food and Machinery

Objective: Addressing the issues of poor accuracy and low efficiency in non-destructive testing methods for kiwifruit sugar content. Methods: Proposing a non-destructive testing method for kiwifruit sugar content that combined hyperspectral detection technology, least squares support vector machine, and improved whale algorithm. By collecting hyperspectral information of kiwifruit through a hyperspectral detection system, after preprocessing and feature wavelength screening, and then input into an improved whale algorithm optimized least squares support vector machine model to achieve rapid and non-destructive detection of kiwifruit sugar content, and verify its performance. Results: The proposed method could achieve rapid and non-destructive detection of kiwifruit …

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Comparative Analysis Of Spectra And Modeling Of Different Cross-Diameter Orah Mandarin Based On Spectral Transformation Algorithm, Hu Feng, Gong Zhongliang, Wen Tao, Dai Xingyong, Tang Ziye Jul 2024

Comparative Analysis Of Spectra And Modeling Of Different Cross-Diameter Orah Mandarin Based On Spectral Transformation Algorithm, Hu Feng, Gong Zhongliang, Wen Tao, Dai Xingyong, Tang Ziye

Food and Machinery

Objective: To reduce the influence of transverse diameter of Mandarin orange on the prediction of sugar content. Methods: 132 citrus were divided into three groups according to transverse diameter: small （65～70 mm）, medium （70～75 mm） and large （75～80 mm）. After collecting the transverse diameter spectrum of all citrus, the spectrum information and transverse diameter information of citrus were synthesized by spectral transformation algorithm, and the spectrum of different sizes of citrus was converted to the same transverse diameter datum. The pre-correction and post-correction spectra were respectively preprocessed, divided by target symbiotic distance algorithm （SPXY）, screened by competitive adaptive weight sampling …

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Walnut Defect Detection Based On Improved Elm And Computer Vision, Xu Jie, Liu Chang Jul 2024

Walnut Defect Detection Based On Improved Elm And Computer Vision, Xu Jie, Liu Chang

Food and Machinery

Objective: To address the issues of low accuracy and poor efficiency in walnut defect detection among existing food production enterprises. Methods: Proposed a fast non-destructive detection method for walnut defects that combined improved extreme learning machines and computer vision. Collected most of the surface image information of walnuts through computer vision, preprocess the image through Gaussian filtering, optimize color and texture features through iterative and information preserving variable methods, finally, by improving the butterfly algorithm to optimize the parameters of the Extreme Learning Machine （random weights and deviations）, fast non-destructive detection of walnut defects could be achieved, and verify the …

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Lightweight Banana Ripeness Detection Based On Improved Alexnet, Jiang Yu, Wang Lingmin Jul 2024

Lightweight Banana Ripeness Detection Based On Improved Alexnet, Jiang Yu, Wang Lingmin

Food and Machinery

Objective: To obtain a lightweight Mini-Alexnet banana ripeness grading model and apply it to Android mobile devices. Methods: Based on the external characteristics of bananas with different ripeness, the Alexnet network model was restructured, part of the convolutional layer was deleted, and the global average pooling was used instead of the full connection layer to reduce the model parameters and required memory. A larger convolutional kernel was replaced to extract the global characteristics of the banana skin to achieve an improved lightweight Mini-Alexnet network model. Then the Mini-Alexnet network model was deployed as Android mobile APP, and its feasibility and …

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Study On The Mechanism Of Boschniakia Rossica Polysaccharide Inhibiting The Activation Of Inflammasomes And Pyroptosis In J774a.1 Macrophages, Zhang Tian, Xu Hui, Quan Jishu, Jin Aihua Jul 2024

Study On The Mechanism Of Boschniakia Rossica Polysaccharide Inhibiting The Activation Of Inflammasomes And Pyroptosis In J774a.1 Macrophages, Zhang Tian, Xu Hui, Quan Jishu, Jin Aihua

Food and Machinery

Objective: This study aimed to investigate the inhibitory effect of Boschniakia rossica polysaccharides （BRPS） on the activation of inflammasome and pyroptosis of J774A.1 macrophages induced by lipopolysaccharide （LPS） and adenosine triphosphate （ATP）. Methods: The nucleotide-binding oligomerization domain-like receptor protein 3 （NLRP3） inflammasome model was established by stimulating J774A.1 macrophages with LPS and ATP. Cell viability was detected using the cell counting kit-8, the release of lactate dehydrogenase （LDH） was tested with the microplate method, the cellular level of NLRP3 and cell membrane damage were detected using the immunofluorescence staining method, and the secretion of interleukin-1β （IL-1β） was …

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Optimization Of Cellulase-Assisted Extraction Of Volatile Oil From Acorus Tatarinowii And Study On Its Inhibitory Components On Gaba-T Activity, Fang Chengwei, Ma Xiuping, Chen Liang, Li Qian Jul 2024

Optimization Of Cellulase-Assisted Extraction Of Volatile Oil From Acorus Tatarinowii And Study On Its Inhibitory Components On Gaba-T Activity, Fang Chengwei, Ma Xiuping, Chen Liang, Li Qian

Food and Machinery

Objective: This study aimed to establish a hollow fiber ligand fishing method for screening γ- Aminobutyrate transaminase (GABA-T) inhibitory component from the volatile oil of Acorus tatarinowii. Methods: Based on optimizing the enzyme assisted extraction process of volatile oil from A. tatarinowii using response surface methodology, GABA-T solution was injected into the hollow fiber lumen and used as a "bait" to fish out the potential active components in A. tatarinowii volatile oil, and its GABA-T inhibitory activity was verified. Results: The results showed that the optimum extraction conditions of volatile oil from A. tatarinowii were as follows: cellulase content …

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Characterization And Analysis Of The Volatile Components Of Cyclocarya Paliurus Tea From Different Origins Based On Gc-Ims Technology, Lou Jie, Zuo Yaqian, Tian Xing Jul 2024

Characterization And Analysis Of The Volatile Components Of Cyclocarya Paliurus Tea From Different Origins Based On Gc-Ims Technology, Lou Jie, Zuo Yaqian, Tian Xing

Food and Machinery

Objective: To investigate the differences in volatile odor substances of Cyclocarya paliurus tea from different origins. Methods: Taking Cyclocarya paliurus tea from Changde, Zhangjiajie, Shaoyang in Hunan, Xiushui in Jiangxi, Qiandongnan in Guizhou, and Enshi in Hubei as the research subjects, the gas chromatography-ion mobility spectrometry (GC-IMS) coupled with partial least squares discriminant analysis (PLS-DA) was used to investigate the characteristics of different volatiles and their similarities in green strychnine teas from different origins. Results: A total of 120 VOCs, including monomers of some substances and their polymers, were detected in Cyclocarya paliurus tea from different origins, which were 34 …

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Study On Physicochemical And Gel Properties Of Five Kinds Of Minor Bean Flours, Piao Shenghu, Yuan Jieyao, Xu Li, Liu Yanlan, Yi Cuiping Jul 2024

Study On Physicochemical And Gel Properties Of Five Kinds Of Minor Bean Flours, Piao Shenghu, Yuan Jieyao, Xu Li, Liu Yanlan, Yi Cuiping

Food and Machinery

Objective: To explore the potential of minor beans as ingredients for starch gel foods. Methods: The basic compositions were analyzed, as well as the hydration, pasting, and gel properties of five kinds of minor bean flours, including mung beans, peas, white kidney beans, red beans, and chickpeas. Results: The water absorption index （WAI） of Mung bean powder at 90 ℃ and the water solubility index （WSI） at 40 ℃, the water absorption was better. In gelatinization results, mung bean powder had the highest recovery value, and showed good gelatinability. The results showed that the hardness and chewability of mung bean …

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Optimization Of The Preparation Process And Antioxidant Activity Analysis Of Blueberry Juice By Wet Ultrafine Grinding Process And Compound Enzymolysis Method, He Wanying, Dan Li, Zhao Liangzhong, Huang Zhanrui, Long Zhanqian Jul 2024

Optimization Of The Preparation Process And Antioxidant Activity Analysis Of Blueberry Juice By Wet Ultrafine Grinding Process And Compound Enzymolysis Method, He Wanying, Dan Li, Zhao Liangzhong, Huang Zhanrui, Long Zhanqian

Food and Machinery

Objective: This study aimed to optimize the preparation process of blueberry juice and improve its antioxidant activity. Methods: Blueberry juice was prepared using a wet ultrafine grinding process and compound enzymolysis method. Response surface methodology was used to optimize the process parameters and analyze the antioxidant activity of blueberry juice. Results: There were significant differences in the juice yield and active substance content of blueberry juice under different solid-liquid ratios, crushing times, compound enzyme contents, and enzymatic hydrolysis times, with enzymatic hydrolysis time having the most significant impact on juice yield and anthocyanin content. The optimal process parameters for the …

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Preparation And Characterization Of Oxidized Corn Starch/Gelatin Composite Capsules, Tan Xin, Liang Chunyan, Deng Songlin, Chen Qijie, Luo Yongqing Jul 2024

Preparation And Characterization Of Oxidized Corn Starch/Gelatin Composite Capsules, Tan Xin, Liang Chunyan, Deng Songlin, Chen Qijie, Luo Yongqing

Food and Machinery

Objective: Modified starch was used to mix with gelatin to prepare the capsule shell, and the cost of preparing the capsule shell was reduced. Methods: Oxidized corn starch prepared by using 15% hydrogen peroxide was used as raw material to mix with part of gelatin. The oxidized corn starch/gelatin composite film and capsules were prepared by casting method and impregnation method, respectively, and were characterized by Fourier transform infrared spectroscopy （FT-IR）, X-ray diffraction （XRD） and Scanning electron microscopy （SEM）. Results: The results showed that the ratio of oxidized corn starch and gelatin was 5∶5, the drying weight loss of oxidized …

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Large-Scale Production Of Milk Source Cgmp By Ion Exchange Resin Method And Its Hemagglutination Inhibitory Activity Against Influenza Virus, Wang Qingmei, Liu Xiaoyu, Chen Qingsen, Zhao Pei, Yan Yali Jul 2024

Large-Scale Production Of Milk Source Cgmp By Ion Exchange Resin Method And Its Hemagglutination Inhibitory Activity Against Influenza Virus, Wang Qingmei, Liu Xiaoyu, Chen Qingsen, Zhao Pei, Yan Yali

Food and Machinery

Objective: This study aimed to optimize the process conditions for the large-scale production of milk-derived casein glycomacropeptide （CGMP） and explore its hemagglutination inhibition （HI） ability against influenza virus. Methods: Using anion exchange resin as the separation medium and sialic acid content the activity detection index of the product,based on the preliminary small and medium-sized tests, the large-scale production of CGMP from whey powder was investigated from five process conditions: sample volume, loading flow, eluent concentration, eluent volume, and resin service cycle. Meanwhile, a hemagglutination inhibition test was used to verify the inhibitory activity of the product CGMP against the influenza …

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Antimicrobial Peptide-Coupled Silver Nanomaterials And Their Applications In Medical And Food Fields, Xie Runsheng, Li Peijun, Jiang Yuqiu, Cao Xingye, Li Haiyun, Su Donglin Jul 2024

Antimicrobial Peptide-Coupled Silver Nanomaterials And Their Applications In Medical And Food Fields, Xie Runsheng, Li Peijun, Jiang Yuqiu, Cao Xingye, Li Haiyun, Su Donglin

Food and Machinery

Due to antimicrobial activity, nanoparticles (NPs) in combination with antimicrobial peptides (AMPs) can be used to kill drug-resistant (MDR) pathogens. Nanosilver (AgNPs) has broad-spectrum and efficient antimicrobial properties, multiple bacterial inactivation mechanisms, and the ability to fine-tune the conjugation on the surface of antimicrobial peptide-conjugated silver nanoparticles (AMP-AgNPs), which results in higher biosafety of AMP-AgNPs. The review summarized the latest research progress of AMP-AgNPs conjugates and discussed the synthesis method, antibacterial activity, mechanism of action, hemolytic toxicity of AMP-AgNPs conjugates, as well as their applications in medical and food fields. The future development direction of AMP-AgNPs conjugates was also prospected.

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The Effects Of Moisture On Microorganisms, Quality, And Flavor Of Liuyang Douchi During The Pile Fermentation Period, Jiang Liwen, Zhang Haodong, Qin Yeyou, Hu Jialiang, Liu Yang Jul 2024

The Effects Of Moisture On Microorganisms, Quality, And Flavor Of Liuyang Douchi During The Pile Fermentation Period, Jiang Liwen, Zhang Haodong, Qin Yeyou, Hu Jialiang, Liu Yang

Food and Machinery

Objective: Pile fermentation is an important process for the formation of Liuyang Douchi flavor, the initial moisture of the douchi qu during pile fermentation could induce the temperature changes which might further affected the microbial community and flavor compounds formation. Methods: In this paper, metagenomic sequencing, combined with headspace solid-phase microextraction-gas chromatography-mass spectrometry （HS-SPME-GC-MS）, was used to investigate the effects of different moisture （low 35%, medium 42%, high 50%） of the douchi qu on the bacterial community changes and volatile composition of Liuyang Douchi during pile fermentation. Results: The results showed that bacteria in high moisture douchi qu proliferated faster …

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Effects Of In Vitro Simulated Digestion On Antioxidant Components And Activities Of Walnut Shell And Distraction Wood, Du Xin, Zhang Xinyue, Wang Fang, Luo Qin, Xie Qing, Zhao Yingqiong, Liu Yuxiao Jul 2024

Effects Of In Vitro Simulated Digestion On Antioxidant Components And Activities Of Walnut Shell And Distraction Wood, Du Xin, Zhang Xinyue, Wang Fang, Luo Qin, Xie Qing, Zhao Yingqiong, Liu Yuxiao

Food and Machinery

Objective: This study aimed to make full use of walnut by-products. Methods: Ultrasonic-assisted ethanol extraction method was used to extract the antioxidant components of walnut shell and distraction wood. The changes of antioxidant components (total phenols and total flavonoids) and antioxidant activities (DPPH, ABTS, hydroxyl radical scavenging ability, Iron reduction antioxidant capacity-FRAP and ferrous ion chelating activity) of walnut by-products extract during the simulated digestion were studied in vitro, and their correlation was analyzed. Results: The total phenols(TPC), total flavonoids(TFC) content, and antioxidant activity of distraction wood were always higher than those of walnut shells (P＜0.05). After simulated …

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A Comparative Study On The Quality And Flavor Of Dromedary And Bifocal Camel Yogurt, Li Yang, Chen Shuxing Jul 2024

A Comparative Study On The Quality And Flavor Of Dromedary And Bifocal Camel Yogurt, Li Yang, Chen Shuxing

Food and Machinery

Objective: This study aimed to analyze and compare the quality and flavor of dromedary and bifocal camel yogurt. Methods: Through physicochemical analysis, texture analysis, rheological analysis, SPME-GC-MC, sensory evaluation, etc., the overall differences in quality and flavor of dromedary and bifocal camel yogurt were determined. Results: The viable bacteria count, protein, fat, total solids content, and antioxidant activity of dromedary camel yogurt were lower than those of bifocal camel yogurt （P<0.05）, but it exhibited better storage stability than bifocal camel yogurt （P<0.05）. Texture analysis showed that the hardness of bifocal camel yogurt was significantly higher than that of dromedary camel yogurt （P<0.05）, while the adhesiveness, cohesiveness, and gumminess of dromedary camel yogurt were significantly higher than those of bifocal camel yogurt （P<0.05）. No significant differences were found in elasticity and chewiness between the two. Rheological characteristics showed that both single and bifocal camel yogurt exhibited shear-thinning flow characteristics, with initial apparent viscosity values of 5.82 and 2.33 Pa·s, respectively. Both formed thixotropic loops, with areas of 2 421.82 and 3 674.16 Pa/s, respectively. The exhibited gel properties, with dromedary camel yogurt having higher elasticity and viscosity. A total of 48 volatile flavor substances were detected in single and bifocal camel yogurt, with significant differences in the content of volatile flavor substances shared by the two camel yogurt types （P<0.05）. The content of volatile acids, esters, aldehydes, ketones, and other substances with lower flavor thresholds was relatively higher in bifocal camel yogurt, making its flavor superior. The sensory evaluation score of dromedary camel yogurt was higher than that of bifocal camel yogurt （P<0.05）. Conclusion: Bifocal camel yogurt has higher nutritional and flavor substance content, while dromedary camel yogurt exhibits superior storage stability and taste.

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Screening And Application Of Monascus In Medium And High Temperature Daqu, Su Feng, Wei Chunhui, Zeng Bo, Huang Zhiguo, Jiang Ke, Ren Zhiqiang Jul 2024

Screening And Application Of Monascus In Medium And High Temperature Daqu, Su Feng, Wei Chunhui, Zeng Bo, Huang Zhiguo, Jiang Ke, Ren Zhiqiang

Food and Machinery

Objective: The production process of esterified Monascus bran koji was optimized, and its effect on Luzhou-flavor liquor was explored. Methods: Five strains of Monascus were screened from Daqu, and the esterifying enzyme production ability of the strains was detected by the ester decomposition method. The strain with the most prominent enzyme production ability was selected to prepare Monascus bran koji. The koji-making process was optimized by single factor and orthogonal experiments and applied to liquor production. Results: Among the five strains, the J-3 strain had the strongest ability to produce esterification enzyme. Under the conditions of 50% moisture, 4% inoculation …

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Effects Of Amomum Villosum Polysaccharide On Physicochemical And In Vitro Digestibility Properties Of Wheat Starch, Kang Zhimin, Geng Ningning, He Mengying, Xu Guozhen, Wang Zhiwei, Zhang Kangyi Jul 2024

Effects Of Amomum Villosum Polysaccharide On Physicochemical And In Vitro Digestibility Properties Of Wheat Starch, Kang Zhimin, Geng Ningning, He Mengying, Xu Guozhen, Wang Zhiwei, Zhang Kangyi

Food and Machinery

[Objective] This study aimed to explore the mechanism of action between Amomum villosum polysaccharide (AVP) and wheat starch and reveal the dose-effect relationship of AVP on the quality of wheat starch. [Methods] an AVP-wheat starch compound system with different concentrations of AVP was prepared. The effects of different concentrations of AVP on the gelatinization characteristics, rheological properties, thermodynamic properties, crystal structure and digestion characteristics of wheat starch were studied. [Results] The AVP could increase the viscosity and gelatinization temperature of the wheat starch compound system, reduce the leaching of amylose during gelatinization and the damage degree of the crystalline region …

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Biological Activity And Food Application Of Carboxymethyl Pachymaran, Xu Pan, Zhang Fangming, Zheng Hui, Dai Xinwen, Yang Yong Jul 2024

Biological Activity And Food Application Of Carboxymethyl Pachymaran, Xu Pan, Zhang Fangming, Zheng Hui, Dai Xinwen, Yang Yong

Food and Machinery

Carboxymethyl pachymaran （CMP） is a carboxymethylated modification product of the water-insoluble polysaccharides from Poria cocos. It has many biological activities such as immune regulation, antibacterial, anti-inflammatory, anti-tumor, anti-oxidation, liver damage protection and intestinal flora regulation. It has a wide application prospect in functional food, active molecular carrier, medicine and other fields. In this paper, the research of CMP at home and abroad in recent years was focused, the biological activity, preparation, identification and application development of CMP were reviewed, and the future development direction of CMP was prospected.

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Research And Application Status Of Molecular Simulation Technology In Food Field, Bi Xinjian, Wen Shiyu, Qu Tingmin, Wu Hao, Xie Yufei, Wen Li Jul 2024

Research And Application Status Of Molecular Simulation Technology In Food Field, Bi Xinjian, Wen Shiyu, Qu Tingmin, Wu Hao, Xie Yufei, Wen Li

Food and Machinery

In the food field, a large number of phenomena and problems that are difficult to be macroscopically explained by traditional experimental methods occur during the process of research and development in upstream laboratories to production in downstream factories. Molecular simulation techniques are not only efficient and cost-effective, but also an important tool for connecting micro and macro scales, because molecular models can be used to study molecular behaviors at the atomic level, and thus predict and explain experimental results. This review summarized the commonly used software and databases for molecular simulation techniques, and introduced their applications in recent years in …

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Enzymatic Hydrolysis Preparation And Activity Analysis Of Antioxidant Peptides Derived From Walnut Dregs, Ni Ce, Cao Tianhong, Chen Min, Yu Xun, Wu Hao, Wen Li Jul 2024

Enzymatic Hydrolysis Preparation And Activity Analysis Of Antioxidant Peptides Derived From Walnut Dregs, Ni Ce, Cao Tianhong, Chen Min, Yu Xun, Wu Hao, Wen Li

Food and Machinery

Objective: This study focused on the identification and activity analysis of antioxidant active peptides in walnut dregs protein hydrolysates. Methods: Protein was extracted from walnut meal by fractionation method, and five kinds of proteolytic enzymes, including trypsin, papain, neutral protease, alkaline protease and flavor protease, were used to hydrolyze the proteins. The antioxidant activity of trypsin hydrolysate （TH）, papain hydrolysate （PH）, dispase hydrolysate （DH）, alcalase hydrolysate （AH） and flavourzyme hydrolysate （FPH） were evaluated and compared. The in vitro antioxidant activity of different concentrations of AH was determined by the detection indexes of DPPH free radical scavenging rate, ABTS free radical …

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