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Articles 1891 - 1920 of 5482
Full-Text Articles in Entire DC Network
Evaluation Of The Inactivation Kinetics Of Cronobacter Sakazakii In Infant Formula Treated By Radio Frequency Dielectric Heating And Uvc Light [Research Note], Yun Deng, Yuwei Wu, Yuanrong Zheng, Danfeng Wang, Zhenmin Liu
Evaluation Of The Inactivation Kinetics Of Cronobacter Sakazakii In Infant Formula Treated By Radio Frequency Dielectric Heating And Uvc Light [Research Note], Yun Deng, Yuwei Wu, Yuanrong Zheng, Danfeng Wang, Zhenmin Liu
The Philippine Agricultural Scientist
We studied the inactivation kinetics of Cronobacter sakazakii (CS) in infant formula subjected to radio frequency dielectric heating (RF) alone or sequential RF-UVC irradiation for 30 min. We used one linear model and two nonlinear models to fit the data and compared the results. Our findings revealed that CS was more susceptible to the combined treatment than to RF alone at the same temperature and that inactivation rate increased with increasing temperature. The sequential RF (90°C, 5 min) - UVC (25 min) treatment was the most effective at inactivating CS. The survival curves of CS were non-linear. …
Postharvest Salicylic Acid And Melatonin Dipping Delay Ripening And Improve Quality Of ‘Sensation’ Mangoes, Mohamed A. Awad, Adel D. Al-Qurashi
Postharvest Salicylic Acid And Melatonin Dipping Delay Ripening And Improve Quality Of ‘Sensation’ Mangoes, Mohamed A. Awad, Adel D. Al-Qurashi
The Philippine Agricultural Scientist
Freshly harvested mature-green ‘Sensation’ mangoes were dipped for 10 min in 2 mM salicylic acid (SA) and 0.2 mM melatonin (MT) alone or in combination and stored at 23±1°C and 60–70%RH. SA or MT delayed ripening measured as higher green peel color (lower a* values), firmness, titratable acidity (TA) and membrane stability index (MSI) and lower weight loss, total soluble solids (TSS), TSS/TA ratio and hydrolytic enzyme activities (polygalacturonase, xylanase and α-amylase) compared to that of untreated fruit. Total phenolic content (TPC) in peel of treated fruit increased with fluctuations during ripening and was higher than the control. In pulp, …
Effect Of Contact Time And Attachment Level Of Bacterial Pathogens On Efficacy Of Chlorine Treatment In Fresh Produce, Jyoti Aryal
Effect Of Contact Time And Attachment Level Of Bacterial Pathogens On Efficacy Of Chlorine Treatment In Fresh Produce, Jyoti Aryal
LSU Master's Theses
Bacterial attachment or biofilm formation on produce surfaces may result in limited penetration ability of sanitizers. This study examined the wet and dry contact time (WCT or DCT) of produce during washing with sanitizer and evaluated the effect of attachment level of Listeria monocytogenes during storage on the efficacy of chlorine treatment. Spinach and bell peppers were inoculated with Listeria monocytogenes and Salmonella enterica. The produce was then washed by dipping into a 100 ppm of chlorine solution for 1 min and an additional 1, 3, or 5 minutes (WCT) or removed from the chlorine solution and held for 1, …
Postharvest Fruit Quality Of Apple Influenced By Ethylene Antagonist Fumigation And Ozonized Cold Storage, Vijay Y. Tokala, Zora Singh, Poe N. Kyaw
Postharvest Fruit Quality Of Apple Influenced By Ethylene Antagonist Fumigation And Ozonized Cold Storage, Vijay Y. Tokala, Zora Singh, Poe N. Kyaw
Research outputs 2014 to 2021
The effects of two new ethylene antagonists namely 1H-cyclopropabenzene (BC) and 1H-cyclopropa[b]naphthalene (NC), as well as 1-methylcyclopropene (1-MCP) on ethylene production and fruit quality of Cripps Pink and Granny Smith apple in ozonized cold storage, were investigated. When compared to control, Cripps Pink fruit fumigated with BC and NC exhibited significantly lowest ethylene production and respiration, whilst the Granny Smith fruit treated with 1-MCP exhibited lowest ethylene production followed by NC and BC treatments. Application of ozone in cold storage maintained higher levels of sugars but elevated ethylene production in both the apple cultivars. No significant interaction was recorded between …
Effect Of Low Dose X Ray On Barley Germination And Analysis Of System Dynamics Mechanism, Dong Chen, Wang Wei, Zhang Yi, Zhang Zhi-Yong
Effect Of Low Dose X Ray On Barley Germination And Analysis Of System Dynamics Mechanism, Dong Chen, Wang Wei, Zhang Yi, Zhang Zhi-Yong
Food and Machinery
In this study, barley germination test was carried out in an apparatus that could simulate low-dose X ray environment, and the quality parameters of barley were detected to analyze the relationship between the radiation dose received by barley seeds and the germination process of barley. The study found that the X ray of barley seed germination stage of bud length, root length and biomass to produce inhibition, accept the dose of 1 059.65 μSv/s experimental Ⅰ starch, protein and fat in 3 days delay. which compared with the control group increased 19.8%, 31.6% and 33.3%, respectively and the soluble dietary …
Subcellular Distribution And Risk Assessment Of Aluminum In Seaweed And Tea, Song Zheng, Ma Li-Xia, Peng Qing-Zhi, Huang Hui, Cheng Yin-Qi
Subcellular Distribution And Risk Assessment Of Aluminum In Seaweed And Tea, Song Zheng, Ma Li-Xia, Peng Qing-Zhi, Huang Hui, Cheng Yin-Qi
Food and Machinery
The subcellular distribution of aluminium in seaweed and tea leaves was analyzed by differential centrifugation with microwave digestion and inductively coupled plasma mass spectrometer. The results showed that the proportion of aluminium in cell wall, organelle and cytoplasm of tea leaves were 78.4%, 11.2% and 9.5%, respectively; the proportion of aluminium in cell wall, organelle and cytoplasm of seaweed were 91.60%, 6.95% and 1.33%, respectively. Using transmission electron microscope with energy dispersive spectroscopy, surface scanning analysis was carried out on the distribution of aluminum in the single cell of tea leaves and seaweed, intuitively revealing that aluminum was mainly distributed …
Research On Simulation Of Flow Field In Press Section Of Screw Press Based On Fluent, Mi Guo-Qiang, Huang Zhi-Gang, Hu Shu-Zhen, An Qi, Li He
Research On Simulation Of Flow Field In Press Section Of Screw Press Based On Fluent, Mi Guo-Qiang, Huang Zhi-Gang, Hu Shu-Zhen, An Qi, Li He
Food and Machinery
In order to study the flow field distribution and variation law of the interaction between oil and screw in the chamber of a twin screw press, a physical model of the screw press and the fluid field was established. Fluent is used to solve the finite element simulation. The distributions of pressure field and velocity field and concentration field of oil in the press section were obtained. In the certain scope, the pressure and temperature were higher, and the concentration was higher, which was beneficial to get high oil yield.
Isolation, Identification And Its Biological Activity Analysis Of The Polysaccharide In Passiflora Edulis Sims Leaves From Alkali Extracts, Li Xia, Liu Cheng-Xin, Huang Yan, Mo Guan-Lan, Guan Yuan
Isolation, Identification And Its Biological Activity Analysis Of The Polysaccharide In Passiflora Edulis Sims Leaves From Alkali Extracts, Li Xia, Liu Cheng-Xin, Huang Yan, Mo Guan-Lan, Guan Yuan
Food and Machinery
The residue of Passiflora edulis Sims leaves after hot water extraction was used as material. Polysaccharide was extracted from the residue by using NaOH alkaline solution, followed by separation of ion-exchange chromatography. The physicochemical properties of polysaccharide were determined and analyzed by IR, HPLC and gel permeation chromatography, and then its hypoglycemic and anticoagulant were studied. The results showed that APEL was separated by DEAE-52 cellulose ion-exchange chromatography to obtain the APEL-1, APEL-2, APEL-3, the APEL and its separated components all have typical characteristic peaks of polysaccharides, mainly composed of arabinose, glucose, galactose, xylose, rhamnose, glucuronic acid. The molecular weights …
Preparation Of Citrus Essential Oil Nanoemulsions And Its Antibacterial Activity Against Staphylococcus Aureus, Jiang Shu-Ge, Hou Yu-Hao, Liu Jian, Li Gao-Yang, Fu Fu-Hua, Shan Yang
Preparation Of Citrus Essential Oil Nanoemulsions And Its Antibacterial Activity Against Staphylococcus Aureus, Jiang Shu-Ge, Hou Yu-Hao, Liu Jian, Li Gao-Yang, Fu Fu-Hua, Shan Yang
Food and Machinery
Citrus essential oil, as a natural extract with a broad-spectrum antibacterial effect, can effectively inhibit the growth of food-borne pathogens, but its wide application is limited due to its easy volatilization and poor water solubility. In this study, through the inhibition zone diamater test of three kinds of citrus (bergamot, sweet orange, honey pomelo) essential oilswith good antibacterial effect on Staphylococcus aureus wasusedas the oil phase. Tween 80 was used as the emulsifier, with deionized water used as the water phase, and the nanoemulsions was prepared by phase transformation method. According to the pseudo-ternary phase diagrams, the formulas of three …
Research Progress On Biological Activity And Molecular Mechanism Of Sea Cucumber Saponins, Zhong Jing-Shi, Zhang Jian, Liu Fang, Zhao Yun-Ping, Liu Kui, Wang Yi-Xin, Liu Hai-Chao, Wang Gong-Ming
Research Progress On Biological Activity And Molecular Mechanism Of Sea Cucumber Saponins, Zhong Jing-Shi, Zhang Jian, Liu Fang, Zhao Yun-Ping, Liu Kui, Wang Yi-Xin, Liu Hai-Chao, Wang Gong-Ming
Food and Machinery
In this review, the bioactivities and mechanisms of sea cucumber saponins, such as anti-tumor, anti-biofouling, atherosclerosis-improving, obesity-improving and obesity-related insulin resistance, Parkinson's disease-improving, osteoporosis-improv-ing and lifespan extension-promoting were summarized. Meanwhile, basic research, commercial application research and in-depth studies of sea cucumber saponins with modern technologies were also prospected.
Advances In The Study Of In Vitro Simulated Digestion, Li Nuo, Zhang Dong-Jie, Zhang Gui-Fang, Lu Bao-Xin
Advances In The Study Of In Vitro Simulated Digestion, Li Nuo, Zhang Dong-Jie, Zhang Gui-Fang, Lu Bao-Xin
Food and Machinery
Different types of in vitro digestion conditions and digestion parts were categorized summarized in this review, and different types of in vitro simulated digestion tests were analyzed. The application of in vitro simulated digestion in different nutrients was also reviewed.
Active Components, Physiological Functions And Application Progress Of Aronia Melanocarpa Fruit, Yin Xia-Wei, Wang Chu-Yan, Yang Liu-Qing, Cao Jiang-Wei
Active Components, Physiological Functions And Application Progress Of Aronia Melanocarpa Fruit, Yin Xia-Wei, Wang Chu-Yan, Yang Liu-Qing, Cao Jiang-Wei
Food and Machinery
In this paper, the active components of theAronia Melanocarpa fruits were introduced, and the physiological functions of Aronia Melanocarpa fruits were emphasized. The development status of the Aronia Melanocarpa fruits of was expounded. Finally, some suggestions on its application prospect were put forward, hoping to provide reference for the comprehensive utilization of the resources of Aronia Melanocarpa.
Research Progress In Physiological Function, Extraction And Application Of Anthocyanidin From Black Soybean Coat, Wei Xin-Yuan, Chen Hong-Yin, Cheng Dao-Mei
Research Progress In Physiological Function, Extraction And Application Of Anthocyanidin From Black Soybean Coat, Wei Xin-Yuan, Chen Hong-Yin, Cheng Dao-Mei
Food and Machinery
Summarized the physiological functions and separation and purification process of anthocyanidins from seed coat of black bean, and its application in food, medicine and cosmetics and other industries, and also prospected the future research and utilization of anthocyanidins from seed coat of black bean.
Effect Of Extrusion Process On Different Forms Of Phenolic Compounds And Antioxidant Activities Of Hulless Barley, He Yang-Hang, Liu Gang, Xia Chen, Deng Jun-Lin, Lin Chang-Bin, Xiang Zhuo-Ya, Chen Jian, Zhang Wen-Hui
Effect Of Extrusion Process On Different Forms Of Phenolic Compounds And Antioxidant Activities Of Hulless Barley, He Yang-Hang, Liu Gang, Xia Chen, Deng Jun-Lin, Lin Chang-Bin, Xiang Zhuo-Ya, Chen Jian, Zhang Wen-Hui
Food and Machinery
This study was aimed at determining the contents of different forms of polyphenols and antioxidant activities of hulless barley. The contents and types of polyphenols were detected by Folin-ciocalteu and HPLC, respectively. The antioxidant activity was investigated by testing the scavenging ability of DPPH radicals. Results showed that the free, bind and total phenolic content of hulless barley decreased respectively by 89.3%, 23.7% and 52.7%, and esterified polyphenols slightly increased by 2.49 mg/100 g after processing. The variety of polyphenols segregated from free polyphenol extracts increased three. Besides, 7 phenolic compounds were all tested in bind polyphenols. Ferulic acid had …
Simultaneous Determination Of Four Flavonoid Glycosides And Limonin In Pomelo By Hplc, Zhang Shan, Huang Xue-Song
Simultaneous Determination Of Four Flavonoid Glycosides And Limonin In Pomelo By Hplc, Zhang Shan, Huang Xue-Song
Food and Machinery
In order to simultaneously determine narirutin, naringin, hesperidin, neohesperidin and limonin in pomelo, the effects of elution conditions and measurement wavelength of high-pressure liquid chromatography on the determination results were studied. The results showed that the optimal measurement conditions were as follows. Chromatographic column of Bio-Bond 5 μm C18 (4.6 mm × 250 mm was used, and the injection volume was 10 μL; the detection wavelengths of flavonoid glycosides and limonin were 283 nm and 220 nm, respectively; The phase: included acetonitrile (A) and water (B) with gradient elution of 0 min, 22% A, 8 min, 22% A, 10 …
Determination Of Four Synthetic Antioxidants In Edible Vegetable Oil By Gas Chromatography-Mass Spectrometry Coupled With Quechers, Zheng Hong-Tao, Liu Zi-Xiong, Wei Rong, Xie Guo-Dan, Dong Hai, Tan Gui-Liang
Determination Of Four Synthetic Antioxidants In Edible Vegetable Oil By Gas Chromatography-Mass Spectrometry Coupled With Quechers, Zheng Hong-Tao, Liu Zi-Xiong, Wei Rong, Xie Guo-Dan, Dong Hai, Tan Gui-Liang
Food and Machinery
To establish a gas chromatography-mass spectrometry (GC-MS) method for the rapid determination of four synthetic antioxidants (BHT, BHA, TBHQ, and Ionox-100) in seven kinds of edible vegetable oils by QuEChERS assisted with ultrasonic extraction and purification. After ultrasonic extraction with acetonitrile, the samples were purified by QuEChERS technology, DB-35MS capillary column (30 m × 0.250 mm × 0.25 μm) was used for separation of analytes and ion monitoring (SIM) mode was selected for determination. The analytes were quantified by external standard method. The results indicated that the linear range of synthetic antioxidants was 0.5~20.0 μg/mL, and the correlation coefficient (R …
Antioxidant Properties Of Pecan Shell Bioactive Components Of Different Cultivars And Extraction Methods, Cameron Cason, Veerachandra K. Yemmireddy, Juan Moreira, Achyut Adhikari
Antioxidant Properties Of Pecan Shell Bioactive Components Of Different Cultivars And Extraction Methods, Cameron Cason, Veerachandra K. Yemmireddy, Juan Moreira, Achyut Adhikari
School of Earth, Environmental, & Marine Sciences Faculty Publications
Pecan shells are a rich source of various bioactive compounds with potential antioxidant and antimicrobial properties. This study investigated the effect of pecan variety and method extraction on the antioxidant property of shell extracts. Twenty different varieties of pecan shells were subjected to either aqueous or ethanolic extraction and were examined for total phenolics and antiradical activity. The phenolic content and antiradical activity of shell extracts were significantly (p < 0.05) varied with different pecan cultivars. The total phenolic content of ethanol extracts ranged from 304.2 (Caddo) to 153.54 (Cherokee) mg GAE/g of dry extract and was significantly greater (p < 0.05) than those obtained by aqueous extraction. The antiradical activity of ethanol extracts ranged from 840.6 (Maramec) to 526.74 (Caper Fear) mg TEg−1, while aqueous extracts ranged from 934.9 (Curtis) to 468.3 (Elliot) mg TEg−1. Chemical profiling of the crude and acid hydrolyzed extracts was performed by reverse phase high performance liquid chromatography and flow injection electrospray ionization mass spectrometry. Lignin degradation products such as lignols, dilignols, trilignols, and oligolignols were found to be the major components of tested extracts. Phenolic content and antiradical activity of pecan shell extracts are significantly varied with cultivars and methods of extraction.
Quercetin Blocks The Aggressive Phenotype Of Triple Negative Breast Cancer By Inhibiting Igf1/Igf1r-Mediated Emt Program, Wei-Jen Chen, Jie-Heng Tsai, Li-Sung Hsu, Chih-Li Lin, Hui-Mei Hong, Min-Hsiung Pan
Quercetin Blocks The Aggressive Phenotype Of Triple Negative Breast Cancer By Inhibiting Igf1/Igf1r-Mediated Emt Program, Wei-Jen Chen, Jie-Heng Tsai, Li-Sung Hsu, Chih-Li Lin, Hui-Mei Hong, Min-Hsiung Pan
Journal of Food and Drug Analysis
The cancer-preventive activities of quercetin have been extensively studied in invasive breast cancer; however, the role of quercetin on triple-negative breast cancer (TNBC) with overexpression of insulin-like growth factor-1 receptor (IGF1R) has not been resolved. In this article, we demonstrated that quercetin inhibited the activation of IGF1R and its downstream kinases Akt and Erk1/2 in a dose-dependent manner in human MDA-MB-231 breast cancer cells (TNBC cell line). Related to this, quercetin markedly suppressed the metastatic phenotype and epithelial–mesenchymal transition (EMT) of MDA-MB-231 cells by inhibiting the expression of EMT transcription factors Snail and Slug. Quercetin also increased the secretion of …
Effects Of Beer Based Marinades On The Plasmalogen Content And Composition Of Grilled Ruminant Meats, Charles F. Manful, Thu H. Pham, Natalia P. Vidal, Muhammad Nadeem, Evan Wheeler, Oludoyin A. Adigun, Oluwashina A. Ayinla, Dwayne N. Keough, Raymond H. Thomas
Effects Of Beer Based Marinades On The Plasmalogen Content And Composition Of Grilled Ruminant Meats, Charles F. Manful, Thu H. Pham, Natalia P. Vidal, Muhammad Nadeem, Evan Wheeler, Oludoyin A. Adigun, Oluwashina A. Ayinla, Dwayne N. Keough, Raymond H. Thomas
Journal of Food and Drug Analysis
Plasmalogens are important phospholipids essential for maintaining cardiovascular and brain health. Ruminant meats are excellent dietary sources of plasmalogens. Globally, grilling remains a popular technique for preparing meats. However, little is known concerning how marination affects retention and quality of plasmalogens in grilled ruminant meats. Here we present information on effect of two unfiltered beer-based marinades infused with herbs and spices on plasmalogens in grilled beef and moose meats. Although total plasmalogen contents of marinated grilled meats were lower compared to unmarinated controls, compositionally, wheat ale- and India session ale-based marinades retained higher levels of PUFA plasmalogen PC (phosphatidylcholine) and …
Suitability Of Sugar Alcohols As Antidiabetic Supplements: A Review, Nontokozo Z. Msomi, Ochuko L. Erukainure, Md. Shahidul Islam
Suitability Of Sugar Alcohols As Antidiabetic Supplements: A Review, Nontokozo Z. Msomi, Ochuko L. Erukainure, Md. Shahidul Islam
Journal of Food and Drug Analysis
The major goals in the management of diabetes are to maintain normal control of glucose metabolism and glycemia. Dietary modification is one of the most recommended treatment modalities for diabetic patients. The use of foods sweetened with sugar alcohols (also known as polyols) such as xylitol, sorbitol, mannitol, maltitol, lactitol, isomalt and erythritol, has brought an escalating interest. Since some sugar alcohols do not raise plasma glucose, as they are partially digested and metabolised. Diet composition and adequacy may be altered by replacing carbohydrates with sugar alcohols. It has been established that these polyols are appropriate sugar substitutes for a …
Anthocyanin-Containing Purple Potatoes Ameliorate Dss-Induced Colitis In Mice, Shiyu Li, Tianmin Wang, Baojun Xu, Vijay Indukuri, Jairam Vanamala, Lavanya Reddivari
Anthocyanin-Containing Purple Potatoes Ameliorate Dss-Induced Colitis In Mice, Shiyu Li, Tianmin Wang, Baojun Xu, Vijay Indukuri, Jairam Vanamala, Lavanya Reddivari
Department of Food Science Faculty Publications
Ulcerative colitis (UC), a major form of inflammatory bowel disease (IBD), is on the rise worldwide. Approximately three million people suffer from IBD in the United States alone, but the current therapeutic options (e.g., corticosteroids) come with adverse side effects including reduced ability to fight infections. Thus, there is a critical need for developing effective, safe and evidence-based food products with anti-inflammatory activity. This study evaluated the antiinflammatory potential of purple-fleshed potato using a dextran sodium sulfate (DSS) murine model of colitis. Mice were randomly assigned to control (AIN-93G diet), P15 (15% purple-fleshed potato diet) and P25 (25% purple-fleshed potato …
The Effects Of Wort Oxygenation Scenarios On Fermentation Performance, Volatile Flavor Compound Development, And Flavor Stability In High Gravity Brewing, Ben Jabson
Master's Theses
High gravity (HG) brewing has become the most used strategy for maximizing fermenter productivity in commercial brewing. While HG brewing has many benefits, the additional stress placed on the yeast due to the higher concentration of fermentable sugars in the wort can negatively impact fermentation performance and flavor compound formation. A proper dissolved oxygen (DO) level is vital to guarantee adequate yeast performance during HG fermentations. Dissolved oxygen is vital to yeast viability throughout the fermentation process, as yeast requires oxygen to synthesize vital cell membrane components needed for continued anaerobic growth and cell division. Previous research has demonstrated the …
Research Progress Of Inhibitory Effects Of Polyphenolic Compounds On Xanthine Oxidase, Hong Xin-Yue, Wu Jian-Mei, Luo Xiao-Qiao, Liu Kai, Zhou Wei-Jie, Zhang Guo-Wen
Research Progress Of Inhibitory Effects Of Polyphenolic Compounds On Xanthine Oxidase, Hong Xin-Yue, Wu Jian-Mei, Luo Xiao-Qiao, Liu Kai, Zhou Wei-Jie, Zhang Guo-Wen
Food and Machinery
The inhibitory activities and types of polyphenolic compounds on xanthine oxidase and their interactions in the past five years was summarized in this review, and the structure-activity relationship, the structural modification and its development and application of metal complex were also prospected. This will provide some references for the research and development of polyphenolic compounds as lowing uric acid food functional factors and drugs.
The Flavor Characteristics Of Bayberry Wine And Glutinous Rice Bayberry Wine Were Analyzed Based On Gas Chromatography-Ion Migration Spectrum, Xian Ling-Zhi, Liu Jin-Yang, Lu Jin-Hua, Xie Ding
The Flavor Characteristics Of Bayberry Wine And Glutinous Rice Bayberry Wine Were Analyzed Based On Gas Chromatography-Ion Migration Spectrum, Xian Ling-Zhi, Liu Jin-Yang, Lu Jin-Hua, Xie Ding
Food and Machinery
The volatile components of glutinous rice bayberry wine and bayberry wine were compared by gas chromatography-ion migration spectrum, and the sensory evaluation was made at the same time. The volatile substances of bayberry wine mainly include ethyl butyrate, ethyl isobutyrate, ethyl orthocaproate, ethyl propionate, ethyl caprylate, glutaldehyde and 2-methylbutyraldehyde.The volatile substances of glutinous rice bayberry wine mainly include: ethyl isovalerate, ethyl valerate, isobutyl acetate, leaf alcohol acetate, ethyl lactate, propyl aldehyde, octyl aldehyde, trans-2-hexenal aldehyde, 3-hydroxy-2-butanone and diisobutyl ketone, etc. The composition of the two samples was significantly different. The volatile matter of glutinous rice bayberry wine was more abundant …
Comparison Of Nutritional, Flavor And Functional Characteristics Of Tibetan Yak Butter At Different Altitudes, Xie Si-Wei, Liu Chun-Ai, Sun Shu-Guo, Luo Zhang, Yang Fei-Yang
Comparison Of Nutritional, Flavor And Functional Characteristics Of Tibetan Yak Butter At Different Altitudes, Xie Si-Wei, Liu Chun-Ai, Sun Shu-Guo, Luo Zhang, Yang Fei-Yang
Food and Machinery
The fatty acid composition, volatile components, rheological properties and antioxidant activity of yak butter at different altitudes (2 500~2 800 m, 3 500~4 000 m and above 4 300 m) in Tibetan were analyzed and compared. The results showed that altitude had significant effects on fatty acid composition, volatile components, rheological properties, and antioxidant activity (P<0.05). The unsaturated fatty acid content of yak butter at altitude of 2 500~2 800 m was the highest. Yak butter with an altitude of more than 4 300 m had pure smell and best flavor quality. Yak butter at altitudes of 3 500~4 000 m had the best fluidity. Yak butter at different altitudes had different antioxidant abilities, among which yak butter at altitudes ranging from 2 500 m to 2 800 m had the strongest DPPH free radical (66.99 mmol/100 g Trolox), hydroxyl free Trolox (26.71 mmol/100 g Trolox), superoxide anion scavenging ability (22.85%), and iron ion chelating antioxidant ability (1.41%).
Fabrication Of Rice Protein Hydrolysate-Daidzein Composite Nanoparticles, Chen Xiu-Wen, Jiao Ye, Cui Bo, Zheng Xiang-Ming, Zou Fei-Xue, Cheng Yun-Hui
Fabrication Of Rice Protein Hydrolysate-Daidzein Composite Nanoparticles, Chen Xiu-Wen, Jiao Ye, Cui Bo, Zheng Xiang-Ming, Zou Fei-Xue, Cheng Yun-Hui
Food and Machinery
Rice hydrolysate (RPH) was obtained by using trypsin, and then the nanoparticles of RPH-daidzein composite were fabricated for daidzein delivering. The effects of hydrolysis degree (DH), RPH concentration and daidzein concentration on the characteristic of the composite nanoparticles were investigated by single factor experiments. When the RPH-daidzein composite nanoparticles was prepared under the conditions of a DH of 12%, an enzymatic hydrolysate concentration of 7.5 mg/mL and a daidzein concentration of 0.75 mg/mL, the particle size, polydispersity index and Zeta-potential of the nanoparticles were 449.71 nm, 0.23 and -22.30 mV, respectively. The encapsulation efficiency of daidzein was 60.07%, and the …
Evaluation Of Uncertainty In The Determination Of VA, VD3 And VE In Nutritional Rice Flour For Infants And Young Children By Hplc, Zhang Rong-Bin, Dai Zhi-Yong, Li Meng-Yi, Chen Zhen-Gui, Ren Guo-Pu
Evaluation Of Uncertainty In The Determination Of VA, VD3 And VE In Nutritional Rice Flour For Infants And Young Children By Hplc, Zhang Rong-Bin, Dai Zhi-Yong, Li Meng-Yi, Chen Zhen-Gui, Ren Guo-Pu
Food and Machinery
The uncertainty of the determination of VA, VD3 and VE content in infant nutritional rice flour by HPLC was evaluated. According to JF1059.1—2012 ＂evaluation and Representation of Measurement Uncertainty＂, a mathematical model for simultaneous determination of VA, VD3 and VE content uncertainty in infant nutrition rice flour by HPLC was established, and the sources of uncertainty in the measurement process were analyzed, quantified and synthesized layer by layer. When the sampling volume was 5.000 g, the expanded uncertainty of VA, VD3 and VE in the sample was 0.188 4, 0.009 3, 0.006 7 μg/g, and the measured …
Study On Full-Bed Centrifugal Filtration Used For Suspension Freeze Concentrations Of Apple Juice, Ding Zhong-Xiang, Qin Frank G F, Peng Ke-Wen, Yuan Jiao-Jiao, Jiang Run-Hua, Yin Hui-Bin, Shao You-Yuan
Study On Full-Bed Centrifugal Filtration Used For Suspension Freeze Concentrations Of Apple Juice, Ding Zhong-Xiang, Qin Frank G F, Peng Ke-Wen, Yuan Jiao-Jiao, Jiang Run-Hua, Yin Hui-Bin, Shao You-Yuan
Food and Machinery
A basket-centrifuge was used to perform a full-bed filtration of the porous packed ice bed and concentrated fruit juice produced by suspension freeze concentration (FC). The analysis of the experimental results showed that the apple juice concentration was increased from the initial 10.2 䥺SymbolpB@Bx to 19.6, 28.5 and 40.3 䥺SymbolpB@Bx, after three passes of FC and three passes of centrifugal separation. The final recovery yield of soluble solids of the concentrated fruit juice was 93.6%, and the permeability and its coefficient of the ice bed in the centrifugal filtration mathematical model were 4×10-8 m2 and 0.16 m/s, respectively. …
Study On Pot Type Fixation Process Of Green Tea Based On Online Flavor Detection, Jiang Jian-Jun, Li Zhen-Feng, Song Fei-Hu
Study On Pot Type Fixation Process Of Green Tea Based On Online Flavor Detection, Jiang Jian-Jun, Li Zhen-Feng, Song Fei-Hu
Food and Machinery
In this study, the PEN3 electronic nose was implanted for online flavor detection, based on the traditional pot-type fixating device. By studying the relationship between the response value of the PEN3 electronic nose representative sensor and the quality of the fixating at different pot temperatures, a green tea pot-type fixating system based on the flavor online detection was proposed. The system could feedback control the temperature of the fixating pot according to the measured values of enzymatic oxides and the aroma volatiles of the green tea. The results showed that the low temperature of the fixating pot could lead to …
Ultrasonic Enzymatic Extraction Of Total Flavonoids From Saussurea Involucrata Leaves And Its Antioxidant Capacity Analysis, Ji De-Rong, Liu Song-Qi, Xiong Kun-Yan, Li Meng, Hu Ming-Hu
Ultrasonic Enzymatic Extraction Of Total Flavonoids From Saussurea Involucrata Leaves And Its Antioxidant Capacity Analysis, Ji De-Rong, Liu Song-Qi, Xiong Kun-Yan, Li Meng, Hu Ming-Hu
Food and Machinery
Optimization of ultrasonic enzymatic extraction of total flavonoids from Saussurea involucrata leaves was studied by single factor and response surface experiments. The antioxidant capacity of the total flavonoids extracted from the leaves of S. involucrata was evaluated using the scavenging rate and total reducing power of DPPH·. The results showed that the best technology of total flavonoids from S. involucrata leaves by ultrasonic enzyme method was: adding the crushed leaves of S. involucrata to 30% ethanol solution, with the material liquid ratio 1∶60 (g/mL) and the ultrasonic treatment at 50 ℃, for 12 min. After adjusting the pH to 4.8, …