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2016

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Full-Text Articles in Food Science

Optimal Design On A Brushless Dc External Rotor Motor, Liu Zhiqiang, Shu Ganghua, Du Ronghua, Yang Zhonghua Nov 2016

Optimal Design On A Brushless Dc External Rotor Motor, Liu Zhiqiang, Shu Ganghua, Du Ronghua, Yang Zhonghua

Food and Machinery

Cogging torque ripple is the main impact factor of the output torque ripple of electric vehicles driven by wheel hub motors. To suppressing cogging torque ripple, a DC external rotor motor was studied, and a finite element analysis model was established in Ansoft Maxwell according to its structural parameters. The simulation results of cogging torque agreed well with those obtained from experiments, and this showed the analysis model was correct. Then, the main parameters of the hub motor were optimized by using Taguchi method, in which the peak values of cogging torque and average values of output torque were taken …

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Detection Of Potato External Quality Based On Hyperspectral Technology, Deng Jianmeng, Wang Hongjun, Li Zouzou, Li Yuanhong Nov 2016

Detection Of Potato External Quality Based On Hyperspectral Technology, Deng Jianmeng, Wang Hongjun, Li Zouzou, Li Yuanhong

Food and Machinery

In order to detect the external quality of potato quickly, the hyperspectral imaging technology was used. Potato with germination and other three kinds of common defects were studied. The partial least-squares discriminant model were built after different pretreatment methods for spectral data processing. The results showed that pretreatment method of SNV was the best. 13 and 9 feature bands were selected after using successive projections algorithm (SPA) and weighted weight method (WWM) for spectral data preprocessed. The support vector machine (SVM) discriminant model were established for both SPA and WWM. Our results also showed that the two methods to predict …

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Preparation Ofα-Glucosidase Inhibitory Peptides Derived From Ginkgo Biloba By Enzymatic Method, Zhang Can, Wu Caie, Fan Gongjian, Li Tingting, Wang Jiahong, Gong Hao, Cao Fuliang Nov 2016

Preparation Ofα-Glucosidase Inhibitory Peptides Derived From Ginkgo Biloba By Enzymatic Method, Zhang Can, Wu Caie, Fan Gongjian, Li Tingting, Wang Jiahong, Gong Hao, Cao Fuliang

Food and Machinery

The preparation of α-glucosidase inhibitory peptides was gotten, which was derived from ginkgo biloba by enzymatic hydrolysis with papain. A factorial design experiment was conducted, while, the effects of concentration of substrate, pH, E/S ratio, extraction temperature and time were studied. And then, it was fractioned by using membrane ultrafiltration with molecular weight cutoffs of 100, 50, 30, 10 and 3 kDa. The results showed: with the concentration of substrate 1.5%, pH 7.36, E/S ratio of 5 g/100 g, temperature of 57.9 ℃ and extraction time of 4.4 h, the inhibitory activities ofα-glucosidase was the highest, and reached 17.18%. The …

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Research And Development Of Functional Properties In Pueraria, Liang Jie, Li Lin, Tang Hanjun Nov 2016

Research And Development Of Functional Properties In Pueraria, Liang Jie, Li Lin, Tang Hanjun

Food and Machinery

Summarized the functional properties and application of pueraria in the food industry, and analyzed the exploitation, research and problems of the kudzu as a dry crop resource. It was helpful for high efficiency development and level improvement in technology and industry development of pueraria application.

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The Research Progress On Near Infrared Spectroscopic In The Non-Destructive Detection Ofthe Quality Of Edible Oil, Li Juan, Liang Shuyu Nov 2016

The Research Progress On Near Infrared Spectroscopic In The Non-Destructive Detection Ofthe Quality Of Edible Oil, Li Juan, Liang Shuyu

Food and Machinery

The Near infrared spectroscopy analysis technique, with the characteristics of high efficiency and speediness, non-destructiveness, environmentally friendliness and easiness to operation, has developed fast in the past few years and is widely used in quality identification of agricultural products. In this paper, it was summarized and prospected the application progress in many aspects, such as the detections of physicochemical index of edible oil, chemical changes during frying, adulterated oils, and the kinds of edible oil by using Near Infrared Spectroscopy analysis technique and chemometrics in recent years. This review provided the direction and basis for the further analyses of edible …

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Transformation Of Criminal Law Regulation On Food Safety Of China In The Risk Society, Liu Lizhen, Huo Jianping Nov 2016

Transformation Of Criminal Law Regulation On Food Safety Of China In The Risk Society, Liu Lizhen, Huo Jianping

Food and Machinery

The frequent occurrence of food safety in modern society is the typical performance of risk society in the field of food. Under the risk society, due to the ongoing and expansion of food safety risk, people's special requirements for food safety, as well as prevention based traditional criminal law regulation is insufficient to ensure the food safety, the measures must be done, for expanding the food safety law adjustment range, paying attention to the restoration norms of criminal law and adhereing to the principle of modesty etc.. All these can contribute to the smooth transition of China's food safety regulation …

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Studies On Volatile Oil Extracting Process Optimization By Supercritical Co2 And Analysis By Gc—Ms Of Allium Mongolicum Regel Flowers, Wen Junfeng, Liu Xia, Gao Liguo, Li Rui Nov 2016

Studies On Volatile Oil Extracting Process Optimization By Supercritical Co2 And Analysis By Gc—Ms Of Allium Mongolicum Regel Flowers, Wen Junfeng, Liu Xia, Gao Liguo, Li Rui

Food and Machinery

The volatile oil from the Allium mongolicum Regel flowers by supercritical-CO2 fluid extraction(SFE) was optimized using response surface methodology(RSM)，and the volatile oil was identified by GC—MS. The effects of the extraction pressure, extraction temperature, extraction time on the yield of volatile oil were investigated by a three-factor and three-level Box-Behnken central composite design with the extraction rate as the response value. The results showed that the optimum conditions for the extraction of Allium mongolicum Regel flower oil were as follows: extracting temperature 39 ℃, pressure 29 MPa, time 1.2 h, CO2 flux 20 L/ h. Under such condition, …

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Optimization On Ultra High Pressure Extraction Process Of Mussel Polysaccharide Based Artificial Neural Network, Zhang Bin, Sun Lanping, Shi Ying, Tu Kang Nov 2016

Optimization On Ultra High Pressure Extraction Process Of Mussel Polysaccharide Based Artificial Neural Network, Zhang Bin, Sun Lanping, Shi Ying, Tu Kang

Food and Machinery

Based on the raw materials of mussel meat after taking out the pearl, ultra high pressure is used to extract mussel polysaccharide. The response surface experimental design was used to get the training samples for the neutral network, while the sophisticated neutral network was used for training and stimulating, analyzing extraction factors (pressure strength, solid- liquid ratio and pressure holding time), the interaction between the factors that affected the extraction rate of mussel polysaccharide, and optimizing the ultra high pressure extraction process of mussel polysaccharide. The results showed that artificial neutral network optimization was more accurate than response surface method …

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Procedure Optimization On Extraction Of Jujube Polysaccharide With Enzyme-Microwave, Zhang Lizhi, Feng Na Nov 2016

Procedure Optimization On Extraction Of Jujube Polysaccharide With Enzyme-Microwave, Zhang Lizhi, Feng Na

Food and Machinery

The polysaccharide from Lingwu Jujube was extracted using enzyme-microwave method. Moreover, the influence factors of polysaccharide extraction were studied, i.e. the enzyme concentr-ation, the hydrolysis time, the material ratio, the microwave power, and the treatment time, and then the optimum extraction condition were finally determined through orthogonal test. The results showed that the jujube polysaccharide could be extracted with high efficiency by combining the utilization of 1.5% trypsin (pH 8.0, hydrolyzing for 2.0 h) with the microwave (under the medium fire for 5 min), controlling the material ratio at 1∶20 (mass ratio).

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Effect Of Core Browning And Storage Fresh-Keeping On Huangguan Pear By Low-Power Microwave Treatment, Guo Yanming, Dong Ming, Zhang Linyu, Wu Xiaocong, Zhang Shuyuan, Jin Wenping Nov 2016

Effect Of Core Browning And Storage Fresh-Keeping On Huangguan Pear By Low-Power Microwave Treatment, Guo Yanming, Dong Ming, Zhang Linyu, Wu Xiaocong, Zhang Shuyuan, Jin Wenping

Food and Machinery

With a low-power microwave treatment on Huangguan pear fruits, different levels of low-power microwave treatment on fruit storage quality and the influence of the core browning were studied. Through the determinations of total phenols, polyphenol oxidase (PPO), malondialdehyde (MDA), DPPH in Huangguan pear core and ethylene, respiration intensity, hardness in storage period, the optimal treating conditions were gotten. Under the condition of 0～2 ℃ refrigerating, compared with the control group, the low energy microwave treatment group could keep the fruits of high hardness, delay the reduce of soluble solids, reduce the respiration intensity of fruit, and delay the ethylene peak …

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Study On Extraction Of Essential Oil From Lysimachia Foenum-Graecum Hance And Its Preservation Effect On Longan, Yan Xuyu, Li Ling, Chen Ting, Wu Yuanjiao Nov 2016

Study On Extraction Of Essential Oil From Lysimachia Foenum-Graecum Hance And Its Preservation Effect On Longan, Yan Xuyu, Li Ling, Chen Ting, Wu Yuanjiao

Food and Machinery

Essential oil was extracted from Lysimachia foenum-graecum Hance using steam distillation method. The extraction conditions of essential oil were optimized by orthogonal experimental design, and its preservation on longan was studied. The results showed that the optimum extraction technology were: the concentration of sodium chloride 4%, the distilling time was 6 h, and the solid-liquid ratio of 1∶10 (g/mL). Under the condition, the extraction rate of essential oil reached 0.167 2%. The preservation results indicated: the antibacterial effects of 4 treatments, the content of Vitamin C and soluble solid decreased gradually, and weight loss and corruption rate of longan increased …

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Effect Of Hemp Seed And Algae Oils Preparation On Blood Lipid-Lowering And Antioxidant Activities For Mixed Hyperlipidemia Rats, Bai Chuanming, Li Li Nov 2016

Effect Of Hemp Seed And Algae Oils Preparation On Blood Lipid-Lowering And Antioxidant Activities For Mixed Hyperlipidemia Rats, Bai Chuanming, Li Li

Food and Machinery

Objective: The effects of hemp seed and algae oils preparation on blood lipid-lowering and antioxidant activity of mixed hyperlipidemia rats were investigated in this study. 50 rats were randomly divided into 5 groups, i.e., the blank control group, model control group, hemp seed oil and algal oil preparation low dose group (170 mg/kg), medium dose group (340 mg/kg) and high dose group (510 mg/kg). Then their weights of , testis fat pad and perirenal fat pad, fat body ratio, and the activities of malondialdehyde (MDA), glutathione (GSH) and superoxide dismutase (SOD) were measured after feeding high fat diet and corresponding …

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The Conditions And Methods Of Low Temperature Grain-Storage Technology With Solar Adsorption Refrigeration System, Feng Bo Nov 2016

The Conditions And Methods Of Low Temperature Grain-Storage Technology With Solar Adsorption Refrigeration System, Feng Bo

Food and Machinery

In this study, solar powered adsorption refrigeration system was investigated to study its application in storage at low temperature, and the thermal performance of the system has been tested and analyzed. The results showed that at the high temperature in summer season, when the solar refrigeration system was cooled at 12:00~13:00, the solar thermal collector surface radiation intensity is about 3.0 MJ/(m2·d), and the refrigeration power system is about 3.9 kW distribution according to time. Moreover, the it was found that cooling power and low temperature storage required cooling capacity in general. Under the condition of solar radiation …

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Study On Irradiation Sterilization And Dose Of Semi-Finished Micropterus Salmoides, Wang Weiqiong, Xiong Guangquan, Chen Yuxia, Bai Chan, Li Hailan, Zu Xiaoyan Nov 2016

Study On Irradiation Sterilization And Dose Of Semi-Finished Micropterus Salmoides, Wang Weiqiong, Xiong Guangquan, Chen Yuxia, Bai Chan, Li Hailan, Zu Xiaoyan

Food and Machinery

In order to regulate the technical conditions of irradiation sterilization for semi-finished Micropterus salmoides (SFMS), we investigated the impacts of irradiation on the microbe quantity, pH value, water holding capacity, color value and volatile components of it in this study, by using different doses ranging from 0.00 to 8.74 kGy of 60Co gamma ray irradiation. The results showed that, with the irradiation of 3.25 kGy, the total bacteria decreased to 10 CFU/g. Moreover, the total bacteria decreased to 250 CFU/g and 10 CFU/g, at the D10 value of 1.54 kGy and 3.64 kGy, respectively. At the range of …

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Supercritical Co2 Extraction Of Idesia Polycarpa Oil And Analysis Of Its Fatty Acid Composition, Kuang Chuntao, Wu Bin, Tang Hongwei, Xiang Shu, He Jianyang Nov 2016

Supercritical Co2 Extraction Of Idesia Polycarpa Oil And Analysis Of Its Fatty Acid Composition, Kuang Chuntao, Wu Bin, Tang Hongwei, Xiang Shu, He Jianyang

Food and Machinery

To make full use of Idesia polycarpa resource, the optimum conditions of extracting oil in I. Polycarpa by supercritical CO2 were studied by single factor and Box- Behnken designs, and the fatty acid composition of this oil was analyzed by gas chromatography-mass spectrometry (GC-MS). The results showed that the yield of the oil in I. polycarpa extracted by supercritical CO2 was (38.25±0.41)%, when extracted at 24 MPa and 53 ℃ for 147 min. Moreover, the regression model between yield and influence factors was very significant (P=0.000 9). In addition, the results of GC-MS showed that the total content …

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Simultaneous Detection Of Puffiness And Soluble Solids Content For Intact Citrus By Online Spectroscopy, Liu Yande, Wu Mingming, Sun Xudong, Zhu Danning Nov 2016

Simultaneous Detection Of Puffiness And Soluble Solids Content For Intact Citrus By Online Spectroscopy, Liu Yande, Wu Mingming, Sun Xudong, Zhu Danning

Food and Machinery

Puffy fruit and soluble solid content (SSC) are important indexes for evaluating the quality of citrus. The feasibility was discussed for detecting Puffing disease and SSC of intact citrus simultaneously by online visible-near infrared (visible-NIR) transmittance spectroscopy. The spectra were recorded with the integration time of 100 ms in the wavelength range of 350~1 150 nm when the samples were conveyed at the speed of five samples per second. The feasibility of simultaneous and online detection of puffiness fruit and SSC for intact citrus simultaneously was discussed by visible-near infrared transmittance spectroscopy. The response properties of visible-NIR spectra for normal …

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Effect Of Different Solvents On Total Phenolic Content, Total Flavonoid Content And Antioxidant Activity Of Highland Barley, Shne Yingbin, Zhang Youwei, Huang Caihuan, Chen Yongsheng, Wang Li, Ou Shiyi, Zhang Hui Nov 2016

Effect Of Different Solvents On Total Phenolic Content, Total Flavonoid Content And Antioxidant Activity Of Highland Barley, Shne Yingbin, Zhang Youwei, Huang Caihuan, Chen Yongsheng, Wang Li, Ou Shiyi, Zhang Hui

Food and Machinery

The objectives of this study were to evaluate total phenolic, total flavonoid content and antioxidant activities of different extraction from three kinds of highland barley. The results showed that 95% ethanol and 60%acetone were better to extract phenolic compounds than other solvents. Total phenolic and total flavonoid contents, antioxidant activities of Zangqing 2000 using different solvents were higher than that of Xunhua and Shangri-la highland barley. Meanwhile, the highest total phenolic content of Zangqing 2000 was 211.92 mg GAE/100 g DW in 60% acetone, the highest total flavonoid content of Zangqing 2000 was 60.11 mg RT/100 g DW in 60% …

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Effect Of Handling Cattle In Different Platform Slope On Beef Quality, Guo Bing, Wang Haifeng Nov 2016

Effect Of Handling Cattle In Different Platform Slope On Beef Quality, Guo Bing, Wang Haifeng

Food and Machinery

In order to investigate the beef quality changes under handling cattle in different platform slope, Twenty simon tal beef cattle were randomly divided into 4 groups, the cow is respectively loading and unloading through (30,40,50 °) slope, then cattle are slaughtered. The pH value, flesh-colored, drip loss percentage, cooking loss percentage and shear force of postmortem beef were measured respectively. Results showed, with the increase of loading platform slope, pH values, L* value and a* value of postmortem beef significantly decreased (P<0.05), while shear force, b* value, drip loss and cooking loss of postmortem beef significantly increased (P<0.05). This study indicated that beef quality was better through handling cattle in 30 degrees platform slope, and it should be reduced platform slope in cattle actual production thereby improve beef quality.

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Study On Extraction Of Honeysuckle Polysaccharide By Internal Boiling Method, Li Jianfeng, Li Chen, Liao Limin Nov 2016

Study On Extraction Of Honeysuckle Polysaccharide By Internal Boiling Method, Li Jianfeng, Li Chen, Liao Limin

Food and Machinery

The internal boiling method was adopted to extract polysaccharides from honeysuckle. The effects of ethanol concentration, extraction temperature and time, and water-solid ratio on the extraction rate of polysaccharides were discussed. The results showed that the extraction rate of polysaccharide reached 12.89%, when the ethanol concentration (v/v) was 20%, with water-soild ratio was 30∶1 (mL/g), at 95 ℃ for 5 min.

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Research On The Alcohol Precipitation And Purification Treatment On Tobacco Extracting Solution Of Reconstituted Tobacco By Paper-Making Process, Huang Ming, Yao Jianwu, Yao Yuanjun, Tang Xiangbing Nov 2016

Research On The Alcohol Precipitation And Purification Treatment On Tobacco Extracting Solution Of Reconstituted Tobacco By Paper-Making Process, Huang Ming, Yao Jianwu, Yao Yuanjun, Tang Xiangbing

Food and Machinery

A method for papermaking reengineering qualitative alcohol sink tobacco leaf tobacco extract purification processing method was proposed in this study. Tobacco extract was precipited by 95% ethanol after pre-concentration treatment, and then it was centrifuged to remove the impurities, and macromolecular substances without favoring the sensory quality, such as protein and pectin. Moreover, the pre-concentration of solid content was also examined, including the alcohol concentration, alcohol sink factors, and sink time extract, influencing of sensory quality. The results showed that the papermaking method reconstruction tobacco leaf tobacco extract pre-concentration to solid content was 20%, 40% to 95% of the pre-concentrate …

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Investigation And Analysis Of Consumption Characteristics And Trend Of Dietary Supplement For The Elderly Person, Che Wenhui, Peng Shuangshuang Nov 2016

Investigation And Analysis Of Consumption Characteristics And Trend Of Dietary Supplement For The Elderly Person, Che Wenhui, Peng Shuangshuang

Food and Machinery

Through the survey of dietary supplement consumption on 123 elderly people in Yuelu District of Changsha City, showed that the aged person holds reasonable attitude to consume dietary supplement. They are seriously taking care about their health conditions; incline to get the dietary supplement from pharmacy or specialty stores. They always take the affectivity to first consideration when they make choose. While the dietary supplement attracts younger consumers with ordinary income. Such consumers mostly have reasonable opinions to choose the products and recognize the risks in them. Analyzed the significant factors influencing the dietary supplement consumption in aged group, and …

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Study On Centrifugal And Freeze Drying Of Lactobacillus Plantarum Lp-S2 Dvs, Sui Chunguang, Liang Jinzhong, Wang Fengqing Nov 2016

Study On Centrifugal And Freeze Drying Of Lactobacillus Plantarum Lp-S2 Dvs, Sui Chunguang, Liang Jinzhong, Wang Fengqing

Food and Machinery

Lactobacillus plantarum Lp-S2 which has the ability to produce gamma-aminobutyric acid, was used as starting strain to develop Direct vat set(DVS). Then the centrifugation process and freeze-drying process were optimized. By orthogonal experiment the optimal conditions of centrifugation were identified as: centrifugal temperature 4 ℃, Time-consuming 30 minutes, centrifugal force 6 000 r/min. In this condition, the centrifugal recovery rate of Lactobacillus Lp-S2 is 83.8%. The cryoprotectant was optimized by single factor and orthogonal test. The best combination of cryoprotectants was 15% trehalose, 15% glucose and 10% skim milk powder. The survival rate of L. plantarum Lp-S2 Direct Vat Set …

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Effects Of Temperature And Thickness On Quality Of Tiegun Yam By Microwave Drying, Xu Wanxiu, Li Zhenfeng, Li Jing, Song Feihu Nov 2016

Effects Of Temperature And Thickness On Quality Of Tiegun Yam By Microwave Drying, Xu Wanxiu, Li Zhenfeng, Li Jing, Song Feihu

Food and Machinery

Slices of tiegun yam were dried at different temperature and thickness without any chemical preservatives added. To dry the slices with constant temperature, optical fiber was used to detect the center temperature of the slices. As the material, fresh tiegun yam was dried by single factor experiment. To evaluate the drying parameters, polysaccharide was extracted by soxhlet extraction and phenol sulfuric acid colorimetry was used to determine polysaccharide e yield of the samples. Besides, weight was online recorded with microwave drying system. Moreover, the sample color was measured with controlling different temperature of material and constant thickness of 5 mm, …

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Preparation Of Microcapsules Made Of The Oil From Litsea Cubeba By Spray Drying Method, Fu Hongjun, Peng Xianglian, Zhong Haiyan Nov 2016

Preparation Of Microcapsules Made Of The Oil From Litsea Cubeba By Spray Drying Method, Fu Hongjun, Peng Xianglian, Zhong Haiyan

Food and Machinery

Litsea cubeba oil microcapsule were prepared by spray drying method. The effect of several shell materials on emulsion stability and surface morphology of microcapsule was investigated, and process conditions of Litsea cubeba oil microcapsule were optimized. The results of scanning electronic microscope (SEM) showed that Litsea cubeba oil microcapsule prepared with hydroxypropyl-β-cyclodextrin/ arabic gum(HP-β-CD/AG) as wall material is similar to smooth spheres with uniform size and good fluidity, and dents, wrinkles and aggregation for microcapsules prepared with other wall materials were observed. The embedding rate of Litsea cubeba oil in microcapsule was 83.80% under optimum conditions of WHP-β-CD/AG:W …

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Research Advance On Antioxidant Active Composition And Antioxidant Mechanisms Of Edible Fungi, Xiao Xingning, Yuan Ya, Liao Xia, Wang Liying, Shi Fang, Ming Jian Nov 2016

Research Advance On Antioxidant Active Composition And Antioxidant Mechanisms Of Edible Fungi, Xiao Xingning, Yuan Ya, Liao Xia, Wang Liying, Shi Fang, Ming Jian

Food and Machinery

Edible fungi are tasty as well as full of all kinds of biological activity, and the antioxidation is one of the most important activities among them. Polysaccharides, polyphenols, terpenoids,and selenium are the major antioxidants of edible fungi. In this paper, it was reviewed the research advance of antioxidant substances and the antioxidant mechanism of edible fungi, and the future research direction was also summarized, aiming to develop and utilize edible and medicinal values of the polysaccharides in the futher, and improve its application in the fields of food and medicine.

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Effects Of Different Browning Inhibitors On Color Preservation Of Dried Banana Slices, Bi Jiayu, Dai Yaoyi, Zheng Jiong Nov 2016

Effects Of Different Browning Inhibitors On Color Preservation Of Dried Banana Slices, Bi Jiayu, Dai Yaoyi, Zheng Jiong

Food and Machinery

In order to improve the color quality of dried banana slices and obtain the best color protecting method, the effects of five different colors protecting agents, i.e. phytic acid, ascorbic acid, sodium chloride, EDTA and citric acid, on the color quality of dried banana slices evaluating were studied, by detecting the L* value and browning degree. The results showed that the order of the effects was phytic acid > citric acid > EDTA > sodium chloride > ascorbic acid. Moreover, it was also found that a better color quality of dried banana slices could be obtained through soking the slices in the color …

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Purification Of Total Polyphenols In Polygonum Capitation By Macroporous Adsorption Resins, Li Xiaobin, Gu Manqi, Zheng Kuiling, Wei Gang, Liao Liling Nov 2016

Purification Of Total Polyphenols In Polygonum Capitation By Macroporous Adsorption Resins, Li Xiaobin, Gu Manqi, Zheng Kuiling, Wei Gang, Liao Liling

Food and Machinery

The total content of polyphenols in polygonum captitatum was determined by Folin-Cioculteu colorimetry. 10 types of macroporous resins were tested by static adsorption and desorption experiments for purifying polyphenols in polygogum captitatum and purifying conditions by the best resin were investigated. The results showed that HPD-722 was the best resin. Purifying conditions were as follows: concentration of adcorption sample 2.0～4.5 mg/mL, 2 BV/h adsoption velocity, 7.5 BV 50% ethanol solution as eluent, the content of the total polyphenol sample was up to 59.02%.

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Study On Industrial Cogeneration Technology Of Hesperidin And Synephrine In Fructus Aurantii Immaturus, Zhang Juhua, Yang Rongwen, Liu Wei, Shan Yang, Li Zhijian Nov 2016

Study On Industrial Cogeneration Technology Of Hesperidin And Synephrine In Fructus Aurantii Immaturus, Zhang Juhua, Yang Rongwen, Liu Wei, Shan Yang, Li Zhijian

Food and Machinery

In order to improve comprehensive utilization value of Fructus aurantii immaturus, based on existing extraction process of Fructus aurantii Immaturus, cogeneration technology of hesperidin and synephrine in Fructus aurantii Immaturus was presented. HPLC method for determination of hesperidin and synephrine were used, Fructus aurantii Immaturus was crushed and extracted by pH 0.3 Hydrochloric acid solution, the filtrate use Dowex 50(H+) strong acid cation to exchange, through vacuum concentration to get synephrine; while using alkali extracting the residue, after acid precipitation and vacuum drying process to obtain hesperidin, the cogeneration technical parameters were optimized, and 16 repeated trials were condcted. With …

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Development And Flavor Substances Analysis Of Purple Sweet Potato And Bitter Buckwheat Combined Vinegar Beverage, Liu Mingyu, Chen Limin, Wang Sidan, Deng Weiqin, Liu Shuliang Nov 2016

Development And Flavor Substances Analysis Of Purple Sweet Potato And Bitter Buckwheat Combined Vinegar Beverage, Liu Mingyu, Chen Limin, Wang Sidan, Deng Weiqin, Liu Shuliang

Food and Machinery

A vinegar beverage combined with purple sweet potato and bitter buckwheat was developed, and the flavor compounds in it were analyzed. Purple sweet potato and buckwheat were processed through smashing, size mixing, saccharification, alcoholic fermentation and acetic fermentation to produce brew purple sweet potato and buckwheat vinegar, respectively.. The optimum formula of the vinegar beverage was obtained through single factor and orthogonal experiments. The 100 mL optimum complex contained 4 mL purple potato vinegar stock solution, 4 mL buckwheat vinegar stock solution,4 g saccharose, and 4 g fructose-glucose syrup. The vinegar beverage prepared under this condition had a unique purple …

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Optimization Ofcorn Steep Liquor Medium For Trehalose Synthase Gene Engineering Bacteria By Response Surface Methodology, Jiang Bo, Xie Ding, Zheng Ruina, Yang Qianyuan, Xie Yanping, Sheng Ming Nov 2016

Optimization Ofcorn Steep Liquor Medium For Trehalose Synthase Gene Engineering Bacteria By Response Surface Methodology, Jiang Bo, Xie Ding, Zheng Ruina, Yang Qianyuan, Xie Yanping, Sheng Ming

Food and Machinery

Corn steep liquor was used as the sole carbon and nitrogen source for recombinant E. coli culture medium. Based on the single factor optimization, three factors of corn steep liquor, MgSO4 and trace elements were chosen to design the response surface of corn steep liquor medium components. With Box-Behnhen experimental design and response surface analysis, the optimum components of corn steep liquor medium were determined. The results showed that the optimum medium components were 26 g/L for corn steep liquor, 2.1 g/L for MgSO4 and 7 mL/L for trace elements. Under these conditions, the activity of trehalose synthase …

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