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Study On The Quality Change Of Soybean Oil In The Frying Process Of Chicken Rice, Zhang Gensheng, Wang Rui, Yue Xiaoxia, Zhang Honglei, Chi Tianqi
Study On The Quality Change Of Soybean Oil In The Frying Process Of Chicken Rice, Zhang Gensheng, Wang Rui, Yue Xiaoxia, Zhang Honglei, Chi Tianqi
Food and Machinery
To soybean oil as the main raw material, chicken for the fried food. The effects of different frying time, frying temperature and the quality of each batch of fried chicken on the quality of soybean oil were studied by measuring the physical and chemical indexes, including color, acid value, peroxide value, carbonyl valence price and polar component of soybean oil. Moreover, the low-frequency nuclear magnetic resonance imaging (MRI) technology was used to verify the physical and chemical indicators. The results showed that the color, acid and carbonyl value of the frying oil increased with the frying time, temperature and the …
Key Technology On The Preparation Of Full Bean Milk By Minuteness Wet Pulverization Method, Yang Xinjun, Cui Zhengwei, Zhang Yuzhong, Dai Ning
Key Technology On The Preparation Of Full Bean Milk By Minuteness Wet Pulverization Method, Yang Xinjun, Cui Zhengwei, Zhang Yuzhong, Dai Ning
Food and Machinery
To investigate the application of minuteness wet pulverization method on the preparation of full bean milk, experimental and numerical analysis were applied in this paper. The influences of different technological parameters on the fiber grain size after the pulverization were also studied, and the empirical formula was obtained by dimensional analysis. The results showed that the average volume size of fiber grain decreased with the increase of cycle number, static blade number and rotating speed. However, the cut depth determined the limitation size of fiber grain. The increase of cycle number would not affect the grain size after the pulverization …
Preparation Of Iron-Chelating Peptides From Zanthoxylum Bungeanum Seed Protein Using Enzymatic Hydrolysis, Yuan Hong, Chai Liqin, Quan Li, Wang Lixia, Tian Chengrui, Wang Xiaoyu
Preparation Of Iron-Chelating Peptides From Zanthoxylum Bungeanum Seed Protein Using Enzymatic Hydrolysis, Yuan Hong, Chai Liqin, Quan Li, Wang Lixia, Tian Chengrui, Wang Xiaoyu
Food and Machinery
Zanthoxylum bungeanum seed protein was hydrolyzed with different proteases, and the optimal protease was screened based on the hydrolysis degree and iron-chelating ability of hydrolysates, then iron-chelating peptides were prepared by the optimal protease. Single factor method and response surface methodology based on Box-Behnken design using four factors and three levels were carried out to optimize the conditions of Zanthoxylum bungeanum seed iron-chelating peptide, and the effects, including substrate concentration, enzyme/substrate ratio, hydrolysis pH, temperature, time on iron-chelating ability of hydrolysate were studied. The results indicated alcalase proteases was the optimal protease to prepare iron-chelating peptides from Zanthoxylum bungeanum seed …
Effect Of The Cassava Flour On The Qualities And Texture Characteristics Of Cake, Wan Gying, Li Mingjuan, Zhang Yayuan, You Xiangrong, Sun Jian, Wei Ping, Zhou Kui
Effect Of The Cassava Flour On The Qualities And Texture Characteristics Of Cake, Wan Gying, Li Mingjuan, Zhang Yayuan, You Xiangrong, Sun Jian, Wei Ping, Zhou Kui
Food and Machinery
The paper focused on the effect of the cassava flour on the physical properties, sensory qualities and texture characteristics of cake. Different proportion of cassava flour instead of low-gluten flour was used to make cake, and the qualities and texture indexes of the products were evaluated. The results showed that with increase of the cassava flour, retraction rate of cake first decreased then increased. However, the sensory score of cake was found first increased then decreased. The baking loss rate, density, hardness and chewiness of cake increased, and the specific volume, moisture content, springiness and cohesiveness of cake was reduced. …
The Effects On Phesicalchemical Properties And Surface Temperature Change Of Cut Tobacco During Convection Drying, Duan Kun, Zhao Yongzhen, Lu Changtong, Chen Liangyuan, Wu Wentao, Zhao Zhiwei, Wang Hongwei, Zheng Fengyang, Li Longfei, Zhu Wenkui
The Effects On Phesicalchemical Properties And Surface Temperature Change Of Cut Tobacco During Convection Drying, Duan Kun, Zhao Yongzhen, Lu Changtong, Chen Liangyuan, Wu Wentao, Zhao Zhiwei, Wang Hongwei, Zheng Fengyang, Li Longfei, Zhu Wenkui
Food and Machinery
Moisture content and temperature variation of cut tobacco during convective drying were detected with the different hot air temperature from 70 ℃ to 120 ℃. The heat and mass transfer model for the variation of cut tobacco surface temperature with moisture content was established, and the characteristic temperature was proposed to characterize the heating degree of cut tobacco in the drying process. Then the correlation between the physicochemical properties of cut tobacco and the characteristic temperature was analyzed after the end of drying (12.5% moisture content of wet base). The results were present as follows: ① Heat and mass transfer …
Advances On Bioactivity And Separating Methods Of Pitaya Fruit Pigment, Duan Xiaoyan, Tian Yan, Deng Fangming
Advances On Bioactivity And Separating Methods Of Pitaya Fruit Pigment, Duan Xiaoyan, Tian Yan, Deng Fangming
Food and Machinery
This paper describes the main components and basic physical properties of the pigment of pitaya fruit， summarizes the extraction technology and purification technology at home and abroad. Gives a comprehensive introduction to the bioactivity of the pitaya fruit and analyzes the problems exist in the research of the pigment as well as the application of the pitaya fruit pigment in daily life.
Study On Antioxidation Stability Of Collagen Peptides Prepared From Swimming Bladders, Zheng Tingting, Tu Zongcai, Tang Pingping, Zhang Lu, Sha Xiaomei, Wang Hui
Study On Antioxidation Stability Of Collagen Peptides Prepared From Swimming Bladders, Zheng Tingting, Tu Zongcai, Tang Pingping, Zhang Lu, Sha Xiaomei, Wang Hui
Food and Machinery
The change of scavenging activity on DPPH radical, hydroxyl free radical, and reducing power capacity was selected as the index to investigate the effects of pH, temperature, sucrose, preservatives, metal ions and gastrointestinal digestion in vitro on the antioxidant stability of collagen peptides from swimming bladders. The results showed that collagen peptides from swimming bladders kept high activity in acidity environment but lose it in alkaline condition; however, the strong heat-resistance was found; sucrose, NaCl and preservatives (sodium Benzoate and Sodium sorbate) had little effects on its antioxidation stability, but high levels of salt made it lost antioxidation stability partially. …
The Effects Of Different Processing Methods On Expected Glycemic Index Of Cereals And Legumes, Cui Yanan, Zhang Hui, Wang Li, Qian Haifeng, Qi Xiguang
The Effects Of Different Processing Methods On Expected Glycemic Index Of Cereals And Legumes, Cui Yanan, Zhang Hui, Wang Li, Qian Haifeng, Qi Xiguang
Food and Machinery
The effects of different processing methods (steaming, extruding and roller-drying) on eGI of adlay, oat, rye, colored kidney bean and chickpea were investigated. The results showed that the eGI of steamed samples were in the following order: rye＞adlay＞oat＞ colored kidney bean＞chickpea. The eGI of extruded samples were in the following order: adlay＞rye＞oat＞colored kidney bean＞chickpea. The eGI of roller-dried samples were in the following order:adlay＞rye＞oat＞colored kidney bean＞chickpea. By different processing methods, the eGI of oat, colored kidney bean and chickpea were lower among five samples. The eGI of the same kind of cereal or legume after streaming, extruding and roller-drying were …
Composition And Positional Distribution Of Fatty Acids In Triacylglycerols Of Three Marine Fish Oils, Zhang Huijun, Wang Xingguo, Jin Qinzhe
Composition And Positional Distribution Of Fatty Acids In Triacylglycerols Of Three Marine Fish Oils, Zhang Huijun, Wang Xingguo, Jin Qinzhe
Food and Machinery
In this study, the purified triacylglycerols (TAG) of selected marine fish oils (anchovy, tuna and salmon oils) were subjected to stereospecific hydrolysis by an sn-1, 3-specific lipase (Lipozyme RM IM) which cleaves selectively the sn-1 and sn-3 position ester bonds of TAG yielding to sn-2-monoglycerides (2-MAG). After lipase hydrolysis, the released free fatty acids and sn-2-MAG were isolated by thin-layer chromatography (TLC). The original TAG and sn-2-MAG were respectively converted to fatty acid methyl esters (FAME), then analyzed by gas chromatography(GC). Results showed that TAG of these marine fish oils were made up of unsaturated fatty acids mainly accounting for …
Detect The Content Of Polar Components In Frying Oils By Preparative Flash Chromatography, Xue Bin, Cao Wenming, Yin Yujie
Detect The Content Of Polar Components In Frying Oils By Preparative Flash Chromatography, Xue Bin, Cao Wenming, Yin Yujie
Food and Machinery
A fast method of separating and detecting the polar compounds in frying oils by preparative FLASH chromatography was established in this study. Applying the EOPC type medium pressure liquid preparative chromatography system as hardware platform and EOPC-specified FLASH column as separation & preparation column, petroleum etherdiethyl ether(8713) as elution solvent, 25 min/min as flow speed, we found polar components(PCs) and non-polar components(non-PCs) in frying oils could be separated properly when elution time of non-PCs was 11min. Separation speed was fast, as the time took by preparative FLASH chromatography was only 41 min, repeatability RSDs of preparative FLASH chromatography were no …
Optimization Of Freeze-Drying Protectantfor Lactobacillus Plantarum Yi-Y 2013, Fan Zhennan, Tong Litao, Zhou Sumei, Yi Cuiping
Optimization Of Freeze-Drying Protectantfor Lactobacillus Plantarum Yi-Y 2013, Fan Zhennan, Tong Litao, Zhou Sumei, Yi Cuiping
Food and Machinery
In order to prepare fresh rice noodle through starter, the survival rate of L. plantarum YI-Y 2013 isolated from natural fermentation liquid was used as target. 3 kinds of protective agent through single factor experiment and Plackett-Burman test were screened, i.e., sorbitol, maltodextrin and glycerin. Moreover, the response surface analysis and fit the regression equations were carried out, and the results indicated that the best protection formula was: sorbitol 1.1 g / 100 g, maltodextrin 24.8 g / 100 g, and glycerol 2.4 g / 100 g. The bacteria survival rate was found arriving to (76.08±2.68)%, close to the prediction …
Study On The Antioxidant And Whitening Effect Of Rose Fermented Broth, Zhao Dan, Cao Yufeng, Ding Wenyu, Wang Changtao, Shi Doudou, Yu Dan, Zhang Jiachan, Li Meng
Study On The Antioxidant And Whitening Effect Of Rose Fermented Broth, Zhao Dan, Cao Yufeng, Ding Wenyu, Wang Changtao, Shi Doudou, Yu Dan, Zhang Jiachan, Li Meng
Food and Machinery
To evaluate the antioxidant, whitening effect and skin safety of rose fermented broth. Method: Rose fermented broth was acquired by fermenting saccharomyces cerevisiae with rose. The skin safety, antioxidant effect and whitening effect were evaluated. The human whole gene expression profile chip was used to explore the whitening mechanism of rose fermented broth. The results showed that the scavenging effect of rose fermented broth on DPPH radical scavenging was obvious and its inhibitory effect on the activity of extracellular tyrosinase was in direct proportional to the concentration. The intracellular tests showed that rose broth had inhibitory effect on tyrosinase activity …
Extraction Optimization Of Enzyme Hydrolysis Method And Gc-Ms Analysis On Oleoresin From Zanthoxylum, Chai Liqin, Yuan Hong, Wang Lixia, Lu Yuehong, Tian Chengrui
Extraction Optimization Of Enzyme Hydrolysis Method And Gc-Ms Analysis On Oleoresin From Zanthoxylum, Chai Liqin, Yuan Hong, Wang Lixia, Lu Yuehong, Tian Chengrui
Food and Machinery
Zanthoxylum was used as the material. Combined cellulase hydrolysis with response surface method to optimize the Zanthoxylum oleoresin (Z瘙簚oleoresin) extraction process. Results showed that the optimum extraction conditions of Z瘙簚oleoresin as follows: 50% ethanol as extractant, cellulase dosage was 62.3 mg/L, enzymolysis time was 2.3 h, enzymolysis temperature was 50 ℃, liquid ratio was 47.41(mL/g). In this condition, the extraction efficiency of Z瘙簚oleoresin was 37.22%. A total of 47 compounds were identified by gas chromatography-mass spectrometry (GC-MS). Main ingredients were D-limonene, linalool, lauricacid, limonene glycol, alpha-terpineol, ascaridole, citronellyl myristate, xanthoxylin, etc.
Effects Of Water-Unextractable Arabinoxylans On The Qualities Of Traditional Chinese Youtiao, Wang Weishi, Zhang Junhui, Li Ling, Fan Mingcong, Wang Li, Qian Haifeng, Li Yan, Zhang Hui, Qi Xiguang
Effects Of Water-Unextractable Arabinoxylans On The Qualities Of Traditional Chinese Youtiao, Wang Weishi, Zhang Junhui, Li Ling, Fan Mingcong, Wang Li, Qian Haifeng, Li Yan, Zhang Hui, Qi Xiguang
Food and Machinery
The effects of water-unextractable arabinoxylans (WUAX) on the properties of the dough and the final qualities of traditional Chinese Youtiao were investigated. For Youtiao mixed powder, the water holding capacity had been improved, the change of gelatinization temperature was not significant and peak viscosity fell from 2,222.67 to 2,053.00 mPa·s. The farinographic properties of Youtiao dough was slightly affected by extra WUAX, except that the water absorption increased from 56.77% to 64.93%. The extensographic properties varied complexly at different proofing time. The SEM microstructure of dough showed that the uniform starch granule structure could not be formed in youtiao dough …
The Influence Of Thermal Treatment On Grass Carp Quality And Volatile Flavor Compounds, Chen Hui, Liu Yan, Li Zhipeng, Huang Lihui
The Influence Of Thermal Treatment On Grass Carp Quality And Volatile Flavor Compounds, Chen Hui, Liu Yan, Li Zhipeng, Huang Lihui
Food and Machinery
The changes of quality, protein composition and volatile flavor compounds of grass carp were studied at 60, 70, 80, 90 and 100 ℃, shape, texture, nutritional value and flavor were set as the evaluation indexes. The results showed that the weight loss rate of fish increased with the treatment temperature, and the L* value of fish increased, but the a* value decreased. The hardness, cohesion, amino acid content, E/N ratio showed an upward trend. 87 types of volatile compounds were detected by SPME-GC-MS, including 24 kinds of alkanes, 19 kinds of aldehydes, 14 kinds of acids, 12 kinds …
Effects Of Controlled Freezing Point Technology Combined With The Modified Humidity Packaging On Preservation For Toona Sinensis, Yang Hui, Mao Weilin, Zhao Shouhuan, Zhao Hongyuan, Zhang Le, Shi Guanying, Wang Xiaomin, Wang Zhaogai
Effects Of Controlled Freezing Point Technology Combined With The Modified Humidity Packaging On Preservation For Toona Sinensis, Yang Hui, Mao Weilin, Zhao Shouhuan, Zhao Hongyuan, Zhang Le, Shi Guanying, Wang Xiaomin, Wang Zhaogai
Food and Machinery
Toona sinensis sprouts were packaged in 0.06 mm thick perforated PE bags and stored at －0.5 ℃(controlled freezing point) after pre-cooling at 4 ℃ for 12 h. In order to investigate the effects of controlled freezing point technology combined with the modified humidity packaging on preservation for Toona sinensis, the changes of weight losses rate, ascorbic acid, soluble protein, chlorophyll, total polyphenol, flavonoid, soluble sugar, malondialdehyde (MDA) content and polyphenol oxidase (PPO)activities were measured. The results indicated that the proper perforation area of PE bags stored at －0.5 ℃ was 141.3 mm2 (0.14% of total area), which decreased the …
Effect Of Ferulic Acid And Caffeic Acid On Acrylamide Formation And Elimination, Wu Haojie, Yu Miao, Huang Caihuan, Ou Shiyi
Effect Of Ferulic Acid And Caffeic Acid On Acrylamide Formation And Elimination, Wu Haojie, Yu Miao, Huang Caihuan, Ou Shiyi
Food and Machinery
In this study, caffeic and ferulic acids were used to test the effect on acrylamide formation and elimination in model reaction systems. In asparagine/glucose reaction system, addition of caffeic and ferulic acid at the concentration of 25 mmol/L and 250 mmol/L inhibited acrylamide formation. However, they increased acrylamide formation below 2.5 mmol/L. It was found that both of phenolic acids increased acrylamide elimination when ferulic acid or caffeic acid were heated with acrylamide, but the effect is not obvious, so effect of caffeic acid and ferulic acid influenced on acrylamide content in Maillard reaction system mainly influence on acrylamide formation …
Effect Of Preparation Method On Physical And Chemical Properties Of Indica Rice Resistant Starch Of Type Rs3, Ouyang Mengyun, Wang Yan, Zhao Chuanwen
Effect Of Preparation Method On Physical And Chemical Properties Of Indica Rice Resistant Starch Of Type Rs3, Ouyang Mengyun, Wang Yan, Zhao Chuanwen
Food and Machinery
The indica starch pregelatinized by microwave as raw material, the effect of ultrasonic auxiliary-dual enzyme method and seed induced-dual enzyme method on the structure and physicochemical properties of indica rice resistant starch of type RS3 were researched in this study. The results showed that the structure of the raw starch was polyhedron, the edge of the surface was distinct, the crystal form was type A, and the crystallinity was only 8.9%. While the structure of RS3 were made by ultrasonic auxiliary-dual enzyme method and seed induced-dual enzyme method became rough and uneven, the solubility, swelling degree and water …
Design And Research Of A New Type Of Vertical Home Flour Mill, Xie Mingzuo, Jia Ruiqing, Ma Fei, Song Tao, Zhou Dongxu
Design And Research Of A New Type Of Vertical Home Flour Mill, Xie Mingzuo, Jia Ruiqing, Ma Fei, Song Tao, Zhou Dongxu
Food and Machinery
A small low speed milling machine has been designed for household use. The device adopts vertical roller mill grinding, and is equipped with the outer cylinder rotation drive screw lift to achieve a uniform grinding mechanism which ensures the produced flour's nutrition structure intact. The function structure and working principle of the mill, the kinematics theory of the roller mill and the lifting mechanism are applied. A new structure of the whole machine as well as its key parts has been performed. The software EDEM has been used to carry out the simulation of the particle transport of flour, and …
Screening Of Wax On Commercialization Process Of Mandarin Fruit, Ma Jiahong, Zeng Kaifang, Deng Lili
Screening Of Wax On Commercialization Process Of Mandarin Fruit, Ma Jiahong, Zeng Kaifang, Deng Lili
Food and Machinery
Mandarin fruits (Citrus reticulata Blanco) were treated with wax A, wax B, wax C and wax D respectively. In order to screen the best wax for the commercialization process of mandarin orange, the effects of different wax treatment on the storage quality of postharvest mandarin orange were measured. The results showed that wax C and wax A effectively reduced the weight loss of fruits, but the disease incidence was severely. Wax D effectively inhibited the yellowing of mandarin fruits, while the browning of the stem end and the disease incidence were severely. Wax B effectively inhibited the yellowing of mandarin …
Effects Of Onion Peel Extract On Antioxidant And Quality Of Western Sausage, Xu Meina, Chen Naiyang, Mu Baide, Wang Zengkai, Yu Shuai, Cui Taihua, Li Guanhao
Effects Of Onion Peel Extract On Antioxidant And Quality Of Western Sausage, Xu Meina, Chen Naiyang, Mu Baide, Wang Zengkai, Yu Shuai, Cui Taihua, Li Guanhao
Food and Machinery
The effects of acid value, peroxide value and thiobarbituric acid value on the degree of lipid oxidation during the storage process were observed. The quality and flavor of the onion skin extract were determined by color difference and whole texture analysis. The effects of onion peel extracts on the color, texture and oxidative stability of western sausages were investigated. The results showed that the addition of onion peel extract is 0.5%, which not only inhibits the oxidation of fat, but also improves the color of western sausages, reduces the hardness, elasticity and chewiness of western sausages.
Analysis Of Glycosylated Casein In Whole Milk Powder, Sun Jingli, Li Linqiang, Zhu Lili, Tang Lu, Wu Yuan
Analysis Of Glycosylated Casein In Whole Milk Powder, Sun Jingli, Li Linqiang, Zhu Lili, Tang Lu, Wu Yuan
Food and Machinery
This study investigated glycosylated casein in whole milk powder and explored its enzymatic property. The casein extraction weight percentage were determined by different pH, different acids, and different methods. The casein was analyzed by SDS-PAGE electrophoresis, and the glycosylated casein were identified via the method of periodate-schiff alkali dyeing and the experiment of morse. The casein was hydrolyzed by papain and the amino acid content was determined accordingly. Results: The percentage of casein extracted under pH 4.6 was significantly higher than that of other groups (P<0.05). The weight percentage of casein extracted from acetic acid (pH 3.58) was (4045±0.66)%, which was significantly higher than that of other groups (P<0.05). The percentage (46.13±0.46)% of casein extracted by tannic acid was significantly higher than that of other methods (P<0.05). The results of casein SDS-PAGE electrophoresis both showed the same 3 bands either different acids or different methods on casein extraction, and their molecular weights were 34, 24, and 60 ku, respectively, and the 34 and 24 ku were glycosylated casein by the method of periodate-schiff alkali dyeing. The results of morse experiment showed that milk powder casein exist glycosylated casein. The content of free amino acid from whole milk powder was significantly higher than that from fresh milk after papain hydrolysis (P<0.05). Whole milk powder has glycosylated casein, their molecular weights are 34 and 24 ku respectively, which are easy to hydrolysis.
Thermal Behavior And Decomposition Kinetics Of Nerol-Β-D-Glycoside, Lei Sheng, Zhao Yingliang, Yang Qianxu, Xia Jianjun, Ding Meiyu, Yang Xihong, Xie Wancui, Zhang Tiandong
Thermal Behavior And Decomposition Kinetics Of Nerol-Β-D-Glycoside, Lei Sheng, Zhao Yingliang, Yang Qianxu, Xia Jianjun, Ding Meiyu, Yang Xihong, Xie Wancui, Zhang Tiandong
Food and Machinery
Thermal decomposition was studied by DTA/SDTG to indicate the thermal degradation mechanism of a natural identifical flavor precursor of nerol-β-D-glucopyranoside. The heating rate was adapted of 5, 10, and 15 ℃/min in the temperature range from 30 to 500 ℃. The parameters were obtained by Friedman method and Ozawa-Flynn-Wall method. The TG-DTG curves showed that with the increase of heating rate, the thermal degradation temperature was mainly determined by the heating rate B. Initial temperature of mass reduction was T0=1.102 3B+199.4, and that at the maximum rate was Tp=2.102 3B+251.9. However, the final temperature of mass …
Contrastive Analysis Of Volatile Compounds From Fresh Adlay Seeds And Those With Off-Flavor, Yang Zhongquan, Kan Jianquan, Chen Guangjing, Xia Ji
Contrastive Analysis Of Volatile Compounds From Fresh Adlay Seeds And Those With Off-Flavor, Yang Zhongquan, Kan Jianquan, Chen Guangjing, Xia Ji
Food and Machinery
Headspace-solid phase micro-extraction (HS-SPME) coupled to gas chromatography-mass spectrometry (GC-MS) was applied to analyze the volatile compounds of the fresh adlay seeds and those with off-flavor. The results showed: more than 85 of volatile compounds which belonged to distinct chemical families were analyzed. A total of 47 compounds in fresh adlay seeds were identified (including 12 alcohols, 11 aldehydes and ketones and 22 hydrocarbons), the major volatile components in fresh adlay seeds were (+)-Limonene, benzene, 2-pentyl furan, hexanal, 1-nonanal, n-octanal, 2-heptanone, 1-pentanol, 1-hexanol, 1-octen-3-ol and linalool; While, there were 58 compounds in adlay seeds with off-flavor (including 17 hydrocarbons, 8 …
Study On Correlation Between Contents Of Active Substances And Antioxidant Activity In Different Varieties Of Aronia Melanocarpa, Liao Xia, Li Weizhou, Zheng Shaojie, Shi Fang, Ming Jian
Study On Correlation Between Contents Of Active Substances And Antioxidant Activity In Different Varieties Of Aronia Melanocarpa, Liao Xia, Li Weizhou, Zheng Shaojie, Shi Fang, Ming Jian
Food and Machinery
This study aimed to investigate the correlation between the content of active substances and antioxidant activity in three kinds of Aronia Melanocarpa. The total phenolic content was determined by Folin-Ciocalteu method, the anthocyanins content was determined by pH-different method, and the flavonoids was determined by Al(NO3)3-NaNO2 system method. Then, determining the DPPH＋· scavenging capacity, ABTS＋· scavenging capacity and reducing power of active substances. It was shown that the phenolic content ranged from 11.916 to 14.550 mg GAE/g·FW, which have the best antioxidant properties, the DPPH＋· scavenging capacity and ABTS …
Research Progress Of Peony (Paeonia Suffruticosa Andr.) Flavonoids, Wang Hongxin, Wu Ying, Kou Xingran, Ma Chaoyang, Guo Xun, Huang Tie
Research Progress Of Peony (Paeonia Suffruticosa Andr.) Flavonoids, Wang Hongxin, Wu Ying, Kou Xingran, Ma Chaoyang, Guo Xun, Huang Tie
Food and Machinery
This review focused on the recent progress of peony (Paeonia suffruticosa Andr.) flavonoids. Extraction, separation, purification methods of peony flavonoids as well as their biological activities were summarized. An outlook on the peony flavonoids was also put forward for future research.
Advances On Bioactive Compounds Of By Products From Hyriopsis Cumingii, Dong Ye, Yu Ting, Wang Jianhui, Wang Yunxiang, Fan Li, Wang He
Advances On Bioactive Compounds Of By Products From Hyriopsis Cumingii, Dong Ye, Yu Ting, Wang Jianhui, Wang Yunxiang, Fan Li, Wang He
Food and Machinery
Triangle pearl mussel (Hyriopsis cumingii) is a superior Chinese freshwater pearl mussel species. After harvesting the pearl from the mussel large quantities of by-products are generated as waste, which includes meat, mantle and mussel tears. However, it is known that processing by-products are rich sources of nutritional substances. The present study briefly analyzed the chemical composition and characterization of mussel by-products. Especially, this paper summarized the research progress of bioactive compounds from mussel by-products such as polysaccharide, protein and peptide. Future research prospects of bioactive compounds from mussel by-products are also outlined.
Plant Anthocyanin Exert Antitumor Effect And Mechanism Of By Jnk Signaling Pathway, Zhi Qi, Li Fuxiang, Yang Yaxuan, Tian Yong, Tang Yu, Shi Fang, Ming Jian
Plant Anthocyanin Exert Antitumor Effect And Mechanism Of By Jnk Signaling Pathway, Zhi Qi, Li Fuxiang, Yang Yaxuan, Tian Yong, Tang Yu, Shi Fang, Ming Jian
Food and Machinery
JNK signaling pathway plays an important role in the pathogenesis and development of tumor. In this study, the composition and activation mechanism of JNK signaling pathway was reviewed. Moreover, the ability of inhibiting the proliferation, invasion and apoptosis of breast cancer, prostate cancer, liver cancer, etc by plant anthocyanin was summarized, in order to provide a certain basis for the application of plant anthocyanins in developing clinical medicine and drugs.
Optimization Of Deproteinization Technology On Chondroitin Sulfate With Sevag Method, Xu Suwen, Tan An, Jin Chenzhong, Hu Yihong
Optimization Of Deproteinization Technology On Chondroitin Sulfate With Sevag Method, Xu Suwen, Tan An, Jin Chenzhong, Hu Yihong
Food and Machinery
In order to promote the quality of chondroitin sulfate, Sevag reagent was used to deprotein the extraction of chondroitin sulfate through the single factor and the orthogonal tests to optimize the process of deproteinization. The optimal conditions were ratio of chloroform to isoamyl alcohol 21 (V/V), Sevag reagent dosage 1/2 fold compared with the volume of chondroitin sulfate extraction, treated for 25 min and repeated treatment for 3 times. The factors influenced the extraction in the order of ratio of chloroform to isoamyl alchohol,treatment time , treatment times, and Sevag reagent dosage. Under the optimal conditions, the retention rate of …
Inhibitory Effects Of L-Theanine On Α-Amylase And Trypsin, Yuan Dongyin, Long Jun, Gong Zhihua, Lin Ling, Zhou Yang, Peng Yingqi, Xiao Wenjun
Inhibitory Effects Of L-Theanine On Α-Amylase And Trypsin, Yuan Dongyin, Long Jun, Gong Zhihua, Lin Ling, Zhou Yang, Peng Yingqi, Xiao Wenjun
Food and Machinery
The inhibitory effects of L-theanine on the activities of α-amylase and trypsin were studied by establishing the best reaction system and adopting research method on graph in order to provide reference for the deep development of L-theanine. The results showed that the inhibitory effects of L-theanine on both enzyme activities were positively associated with its concentration. IC50 (26.078 mg/mL) of L-theanine on the activities of α-amylase was achieved by prewarming enzyme at a concentration of 0.018 mg/mL in the presence of L-theanine at 37 ℃ for 5 min before addition of 1% starch and allowing reaction to proceed for …