Analysis Of Aroma Compounds Of Fruit Wine Fermented With Enterobacter Xiangfang,
2019
Collegeo of Food Science and Technology, Hunan Agricultural University, Changsha, Hunan 410128, China
Analysis Of Aroma Compounds Of Fruit Wine Fermented With Enterobacter Xiangfang, Liu Xiaoyan, Zhou Hongli
Food and Machinery
The aromatic composition of fruit wines fermented with Enterobacter Xiangfang was analyzed by headspace solid phase micro-extraction (HS-SPME) coupled with gas chromatography-mass spectrometry (GC-MS). The results showed that the main aroma components produced by Enterobacter Xiangfang were phenylethanol, 3-methyl-1-butanol, 2-methyl-butanol and their corresponding acetates in the early fermentation stage, and heptaldehyde, 2,4,5-trimethyl-1,3-dioxolane, ethyl decanoate, ethyl octanoate, isobutyric acid and so on in the later fermentation stage. The main aroma components produced by yeast fermentation were ethyl decanoate, phenylethanol, ethyl octanoate, 2,4,5-trimethyl-1,3-dioxolane, 3-methyl-1-butanol, acetal, ethyl Dodecanoate and so on. Compared with yeast fermentation, Enterobacter Xiangfang fermentation not only had the basic …
Technology And Mechanism Of Decolorization For Brown Granulated Sugar By Magnesium Sulfate-Zinc Polysilicate Method,
2019
College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou, Guangxi 545006, China; Guangxi Key Laboratory of Green Processing of Sugar Resources, Guangxi University of Science and Technology, Liuzhou, Guangxi 545
Technology And Mechanism Of Decolorization For Brown Granulated Sugar By Magnesium Sulfate-Zinc Polysilicate Method, Li Weixia, Li Lijun, Yang Lanfeng, Mao Xiang, Cheng Hao
Food and Machinery
The effect and mechanism of decolorization were studied with magnesium sulfate and amphoteric 2% polysilicate zinc on the brown granulated syrup under high pH conditions. The factors and levels of response surface analysis were determined on the basis of single factor tests. The decolorization process was optimized by response surface analysis to obtain the optimum process conditions: magnesium sulfate of 500 mg/L, dosage of 2% silica polysilicic acid zinc of 1.57%, and pH 11. Under this condition, the decolorization rate reached 92.21%. The composites and sugar juice system were characterized by scanning electron microscopy (SEM) and potential analyzer. The results …
Rapid And Non-Destructive Identification Of Different Brands And Inferior Oatsby Near Infrared Spectroscopy Combined With Chemometrics Methods,
2019
College of Food Science and Technology, Hunan Provincial Key Laboratory of Food Science and Biotechnology, Hunan Agricultural University, Changsha, Hunan 410128, China
Rapid And Non-Destructive Identification Of Different Brands And Inferior Oatsby Near Infrared Spectroscopy Combined With Chemometrics Methods, Li Shangke, Du Guorong, Ding Shenghua, Shan Yang, Jiang Liwen, Liu Xia, Li Pao
Food and Machinery
In order to identify the inferior oat samples, and the samples from different local and imported brands, a nondestructive identification method based on near infrared spectroscopy and chemometrics methods was proposed. Spectra of five different brands of oat samples and inferior samples were obtained. Continuous wavelet transform was used for the baseline elimination. Wavenumber selection based on the standard deviation and relative standard deviation was discussed for improving the accuracy of the method, and 15 informative wavenumbers were obtained. Principal component analysis method was used for classification. The results showed that the baseline elimination was achieved by continuous wavelet transform …
Nondestructive Determination Of Reconstituted Tobacco Paper Base Based By X Ray Method,
2019
Zhengzhou Tobacco Research of CNTC, Zhengzhou, Henan 450001, China
Nondestructive Determination Of Reconstituted Tobacco Paper Base Based By X Ray Method, Zhu Hongfu, Du Jinsong, Chang Jiheng, Fan Xinshun, Tian Xiaohui, Wang Jiashao, Lu Duanfeng
Food and Machinery
The reconstituted tobacco paper base with different ratios was determined by X-ray grammage instrument. The effect of tube voltage on repeatability，sensitivity and detection limit of the instrument was analyzed.The results show that tube voltage 6 000 V is more suitable for the determination about the grammage of the reconstituted tobacco paper base;and it is found that the grammage indication value has a high linear relationship with the grammage measured value about the reconstituted tobacco paper base with different ratios，and the established linear regression model with determination coefficient over 0.99，and the predicted maximum relative deviation less than 1%. The reconstituted tobacco …
The Optimization Of Food Safety Regulation Model Based On Economic Analysis,
2019
Party School of CPC Ningbo, Ningbo, Zhejiang 315012, China
The Optimization Of Food Safety Regulation Model Based On Economic Analysis, Liang Liang
Food and Machinery
The discussion on food safety regulation has been limited to the protection of the rights and interests of the parties concerned and the legitimacy analysis of the food safety incidents itself. However, the mode of food safety supervision centered on legality has been difficult to bear the demands of modern administration, maintaining social order and promoting social welfare. Using cost benefit analysis, A-A 'and other economic analysis methods, reasonably set up the main body of food safety regulation, reasonably select the opportunity of food safety supervision, and rationally use the control tools of food safety, to promote the optimization of …
Structure Design Of The Continuous Apricot Pit Removing Machine,
2019
Institute of Agricultural Mechanization Xinjiang Academy of Agricultural Science, Urumqi, Xinjiang 830091, China; Xinjiang Research Center of Equipment for Characteristic Woods Fruit, Urumqi, Xinjiang 830091, China
Structure Design Of The Continuous Apricot Pit Removing Machine, Liu Kui, Yang Liling, Zhu Zhanjiang, Liu Jia, Zhu Zhaoshuai
Food and Machinery
Based on physics feature of apricots, a semi-automatic continuous apricot pit removing device was designed, with the principle of holding the apricot with soft plastic and stamping with the claw type stamping knife. By using the method of combining a cam intermittent divider and a slide block device, the apricot chain plate could be controlled with regulable stop-and-start. Moreover, the stamping knife could complete a process of stamping once, as soon as this chain plate intermittent pauses. The result showed that the apricot pit removing rate was above 96%, and the apricot meat bring together rate was less than 2.4%, …
Online Inspection Of Part's Bearing Holes From Feature Recognition To Partial Stitching,
2019
Jiangsu Provincial Key Laboratory of Food Manufacturing Equipment, Wuxi, Jiangsu 214122, China; School of Mechanical Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
Online Inspection Of Part's Bearing Holes From Feature Recognition To Partial Stitching, Wang Yuyuan, Xu Jie, Ji Weixi, Peng Wei, Du Meng
Food and Machinery
In the online detection process of the bearing hole of the trajectory control part of a beverage filling equipment without fixture positioning, an single picture isn't enough for the high-precision detection measuring. This paper proposes a 2 steps method: feature recognition from the overall visual and high resolution local image obtaining by image stitching. Firstly, the feature description matrix is constructed by the central position relationship of the global image bearing hole, and the overall feature hole recognition is performed by the support vector machine (SVM) method. Secondly, for the identified bearing holes, the KAZE method is used to splicing …
Study On Mechanisms Of Draught Drying And Sensory Quality Change Of Dendrobium Flower,
2019
College of Biotechnology and Pharmaceutical Engineering, West Anhui University, Lu’an, Anhui 237012, China; Biotechnology Research Center of Natural Medicine, West Anhui University, Lu’an, Anhui 237012, China
Study On Mechanisms Of Draught Drying And Sensory Quality Change Of Dendrobium Flower, Zhang Zhenlin, Yin Zhichao
Food and Machinery
Far-infrared drying and LF-NMR was used to explore the drying process of Dendrobium huoshanense flowers and Dendrobium officinale flowers. A basic parameter model of the Dendrobium flower was constructed, and the sensory quality of the flower was studied by texture analysis. The results showed that a basic parameter model of the drying of Dendrobium flower was constructed. The sensory quality analysis based on the NMR spectra and texture analyzer indicated that the composition of water after the drying process was primarily conjunctive. The high sensory quality of the hardness and brittleness of the dry flowers of Dendrobium. Flowers of dried …
Analysis Of Phenols In Pear Wine Brewed By Different Varieties Of Pearand Comparison Of Their Antioxidant Capacity,
2019
Institute of Genetics and Physiology, Hebei Academy of Agricultural and Forestry Science,Shijiazhuang, Hebei 050051, China
Analysis Of Phenols In Pear Wine Brewed By Different Varieties Of Pearand Comparison Of Their Antioxidant Capacity, Li Limei, Feng Yunxiao, He Jingang, Cheng Yudou, Guan Junfeng
Food and Machinery
In order to compare the phenols compounds and antioxidant ability of different pear wines which were brewed by 11 varieties of pear after being respectively inoculated yeast strain RC212，kinds and contents of phenols in these pear wines were analyzed by high performanc liquid chromatography (HPLC), and the antioxidant ability was evaluated as well using the assay of scavenging capacities on DPPH· radical. It was concluded that differences existed among different varieties of pear wines in the phenols compounds and antioxidant ability. The highest contents of phenols compounds and the highest antioxidant ability were both found in pear wine brewed by …
Studies On Quality Change Of Chicken Oil In Processing,
2019
College of Food Science and Biological Engineering, Tianjin Agricultural University, Tianjin 300384, China; Tianjin Engineering Research Center Agricultural Products Processing, Tianjin 300384, China
Studies On Quality Change Of Chicken Oil In Processing, Xue Miao, He Xinyi, Li Xu, Yan Xichun
Food and Machinery
The quality control of chicken oil processing process was carried out with the acid value, peroxide value, iodine value, fatty acid composition and aroma components as index. The results showed that the content of unsaturated fatty acids in chicken oil was more than 60%, that of oleic acid was the highest (39.79%). The acid value and peroxide value of chicken oil decreased first and then increased, while the iodine value showed a downward trend. The fatty acid composition of chicken oil was not affected by the processing process, but the aroma components of chicken oil products varied greatly, and the …
Effects Of The Transglutaminase Treatment On The Quality Of Duck Blood Tofu,
2019
School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; CollaborativeInnovation Center of Food Safety and Quality Control in Jiangsu Province, Wuxi, Jiangsu 214122, China
Effects Of The Transglutaminase Treatment On The Quality Of Duck Blood Tofu, Wang Bin, Chen Xiling
Food and Machinery
In order to improve the quality of duck blood tofu, the effect of transglutaminase on the duck blood gel properties was studied. The effects of transglutaminase dosage and holding time on the water holding capacity, texture and color of duck blood tofu were studied by means of physical property analyzer, high-precision spectrophotometry color analyzer, low-field nuclear magnetic resonance analyzer and scanning electron microscope. On the basis of single factor experiment, the optimum enzyme treatment method was determined by orthogonal design factor level of enzyme addition amount and holding time, and the steaming loss rate was taken as index. The best …
Establishment And Application Of Tobacco Uniformity Evaluation Method Based On Total Sugar/Cellulose Ratio,
2019
R&D Center, China Tobacco Yunnan Industrial Co., Ltd., Kunming, Yunan 650231, Chian
Establishment And Application Of Tobacco Uniformity Evaluation Method Based On Total Sugar/Cellulose Ratio, Yang Qianxu, Wang Meng, Lei Sheng, Zhang Wei, Cai Bo, Zhu Baokun, Ming Xu, Chen Jianming
Food and Machinery
In order to objectively and accurately evaluate the uniformity of cut tobacco, reconstituted tobacco and cut stem in tobacco formula, this paper established a method for evaluating the uniformity of tobacco formula based on the difference between the theoretical value and the actual value of total sugar/cellulose. This method was evaluated, applied and compared by constructing different proportion of reconstituted tobacco and cut stem. The results showed that:The content of total sugar and cellulose in cut tobacco, reconstituted tobacco and cut stem is different. Total sugar: cut tobacco ＞ cut stem ＞ reconstituted tobacco, cellulose: reconstituted tobacco ＞ cut stem …
Research Progress On Grafting Modification Of Protein Glycosylation,
2019
College of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha, Hunan 410000, China
Research Progress On Grafting Modification Of Protein Glycosylation, Feng Yanying, Mu Daichen, Qi Wenlei, Chen Maolong, Xu Zhou, Cheng Yunhui
Food and Machinery
Glycosylation modification of food proteins with reducing sugars allows covalent attachment of the ε-amino group of the protein to the reducing carbonyl group of the sugar by Maillard reaction, which does not require any chemical catalyst, and is a green and effective chemical modification method. We systematically introduced the reaction mechanism, reaction markers, modification methods and functional properties of protein glycosylation, and discussed the research direction of protein glycosylation.
Advances In The Application Of Rfid Technology In Food Traceability Systems,
2019
College of Information Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310023, China
Advances In The Application Of Rfid Technology In Food Traceability Systems, Zhao Xunming, Liu Jianhua
Food and Machinery
RFID technology is simple, flexible and practical. It has been applied to food traceability systems to ensure the quality and safety of food materials. In this paper, the concept of food safety and traceability, and RFID technology are introduced. The research progress in food traceability systems such as dairy products, animal products, aquatic products, fruits and vegetables is summarized. And the advantages of RFID technology and its application difficulties are analyzed. This paper will provide the theoretical guidance to a traceability system for food quality and safety.
Research Advance On Food Nano-Emulsion Delivery System,
2019
School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
Research Advance On Food Nano-Emulsion Delivery System, Li Jinan, Wu Yan, Hu Hao, Wu Xuejiao
Food and Machinery
Nano-emulsion is a kind of delivery system for functional ingredients, which can enhance the stability, solubility, and bioavailability of bioactive compounds. Several macromolecules such as polysaccharides and proteins can be used as emulsifiers to prepare nano-emulsion with high safety, which have great application potential in food industry. In this paper, the selection of core materials, oil phases and emulsifiers, and their effects on the characteristics of nano-emulsion were summarized, and the preparation methods, physicochemical properties and application prospect of nano-emulsion were.also discussed.
Study Of The Present Status On The Preservation Technology Of Fresh Wet Noodles,
2019
College of Food Science and Technology, Hunan Agricultural University, Changsha, Hunan 410128, China
Study Of The Present Status On The Preservation Technology Of Fresh Wet Noodles, Sun Ziqin, Wang Yan, Wu Weiguo, Ouyang Mengyun, Zhao Chuanwen
Food and Machinery
In this review, the main preservation problems of fresh wet noodles during storage were introduced. Moreover, a comprehensive overview of the domestic and international research status and development trendancy of some preservation technologies, including chemical preservatives, atmosphere controlling, and the usage of irradiation in fresh wet noodles, were described.
The Ultrahigh-Pressure/Thermally Induced Technologies Of The Β-Glucan Mixed Gel And The Evaluation System For Their Properties,
2019
Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China
The Ultrahigh-Pressure/Thermally Induced Technologies Of The Β-Glucan Mixed Gel And The Evaluation System For Their Properties, Fan Rui
Food and Machinery
The apparent and functional properties of the mixed gel prepared with the thermal and ultrahigh-pressure were compared by rheological, texture, scanning electron microscopy and other analytical methods. The results showed that the β-glucan typical gels formed by ultra-high pressure and thermally induced at the total concentration of 7% and 8%, respectively, and the properties in water hold capacity, gel hardness, elasticity, chewiness and internality of β-glucan mixed gel formed by ultra-high pressure showed the more superior, in which the hardness of gel formed by ultrahigh pressure was significantly stronger than gel formed by thermal-induced gel (P＜0.05), while the oil hold …
Flavor Components Of Fermented Coconut Milk Using Omics Technology Combined With Spme-Gc-Ms,
2019
College of Food Science and Technology, Hunan Agricultural University, Changsha, Hunan 410128, China; Hunan Provincial Key Laboratory of Food Science and Biotechnology, Changsha, Hunan 410128, China
Flavor Components Of Fermented Coconut Milk Using Omics Technology Combined With Spme-Gc-Ms, Lei Wenping, Zhou Hui, Zhou Xingrong, Wu Kun, Wu Ni, Song Yanfei, Liu Chengguo
Food and Machinery
In order to analyze the correlation between characteristic flavor components and sensory flavor of fermented coconut milk. Solid-phase micro extraction (SPME) combined with gas chromatography-mass spectrometry (GC-MS) was employed to analyze the volatile flavor compounds of fermented coconut, natural coconut milk and yogurt, respectively. The sensory properties of flavor were assessed, and the characteristic flavor of the fermented coconut milk was analyzed from the sensory and flavor substances in combination with the omics technology. The results showed that the sensory flavor characteristics of fermented coconut milk were higher in sweet, sour, coconut, milky, creamy and alcoholic sensory scores; the sweetness …
Isolation And Identification Of Escherichia Coli O26 From A Slaughter House,
2019
School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, Jiangsu 210097, China
Isolation And Identification Of Escherichia Coli O26 From A Slaughter House, Fu Wenjing, Dong Chen, Yu Jinlong, Hu Jie, Jiang Yun
Food and Machinery
Escherichia coli O26 was isolated and identified form a slaughter plant in order to investigate its contamination of E. coli O26. According to USDA detection method, samples were enriched with immunomagnetic separation (IMS) after selective enrichment, and then isolated and purified with selective chromogenic mRainbow agar. Subsequently, the suspected colonies were screened and chose to test the O antigen by PCR and followed by the serum agglutination test. The virulence genes (stx1, stx2, eae and hly) of positive isolations were detected by multiplex PCR. The results showed that only one strain from 120 samples was identified as E. coli O26, …
Optimization Of Coupled Pulping And Steam Blanching On Lipoxygenase Denaturation Of Soybeans,
2019
Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment and Technology, Wuxi, Jiangsu 214122, China; School of Mechanical Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
Optimization Of Coupled Pulping And Steam Blanching On Lipoxygenase Denaturation Of Soybeans, Wang Xiukun, Wu Jiaqi, Cui Zhengwei
Food and Machinery
In order to minimize the beany flavor and improve the quality of soybean milk, the pulping of soybean milk coupled with steam inactive lipoxygenase (lox) activity was investigated. The effect of three factors, including temperature, heating rate, and soaking time, impacting on the lipoxygenase (lox) activity and sensory evaluation of odor of product, were evaluated based on the results of single-factor experiment. Thenafter, the response surface methodology was applied to find optimal condition for the denaturation of the lipoxygenase (lox). The optimum conditions were as follows: being heated at 95.34 ℃, with heating rate of 0.37 ℃/s and soaking for …
