Food Science Commons^™

Extrusion Assisted Alkaline-Enzyme Extraction Process Optimization Of Protein Hydrolysate From Tie Guanyin Tea Residue And Its Functionalities, Guo Feng-Xian, Zheng Zong-Ping, Huang Cheng-Fang, Zhao Wei, Yao Yuan

Food and Machinery

Taking Tie Guanyin residues as the research object, through single factor experiment and response surface methodology, the effects of extrusion water content, sleeve temperature and screw frequency on its assisted alkaline-enzyme combined extraction of tea residue protein hydrolysates (TPH) were discussed, and the functionalities of TPH was then investigated. The optimal extrusion assisted extractions were water content of tea residue material 15%, sleeve temperature 97 ℃, screw frequency 40 Hz. Under the conditions the extraction rate of TPH was improved to (71.37±0.09)%, which was close to the predicted result. The results of TPH antioxidant activity showed the IC₅₀ values …

Evaluation And Classification For Physicohemical Quality Of Vine Tea On Entropy Method And Grey Relation Analysis, Zhang Min, Yu Ji, Wang Qi-Yan, Zhang Jin-Cheng, You Xiang-Tao, Yao Mao-Jun, Ma Cheng-Jin

Food and Machinery

Taking 10 kinds of vine tea samples collected as objects, 15 related physicohemical quality indexes of vine tea were measured. Four core indexes of tea infusioninflavonoids(A₁₁), polyphenols(A₁₂), soluble sugar(A₁₃), and brightness(A₅) were determined by variation analysis, correlation analysis, and principal component analysis. After that, the index weight was determined by the entropy method, and the grey correlation analysis was used to construct the evaluation model of the physicohemical quality: φ_imodelscore=ξ_A11×0.181 1+ξ_A12×0.224 2+ξ_A13×0.415 4+ξ_A3×0.179 3, and the fitting degree between the model score …

Study On Extraction Technology And Application Of Arecoline From Betel-Nut Waste, Chen Juan, Lu Ke-Qiang, Zhu Men-Jun, Jiang Xue-Wei

Food and Machinery

Arecoline was extracted from the core of betel-nut by acid water extraction method. Based on the effects of time, temperature, ratio of material to liquid, hydrochloric acid concentration and extraction times on arecoline by single factor method, a quadratic polynomial model of time, temperature and hydrochloric acid concentration was established by box-Behnken response surface design method to optimize the extraction process. The arecoline extraction was applied to betel-nut products to investigate its effect on the quality of areca products. The results showed that the optimum extraction process conditions were solid-liquid ratio 1∶15 (g/mL), extraction times 2, extraction time 45 minutes, …

Effect Of The Mixed Flour Of Chinese Yam, Coix Chinensis Tod. And Euryale Ferox On The Processing Quality Of Wheat Flour, Shi Jing-Hong, Hao Shui-Yuan, Guo Shu-Wen

Food and Machinery

Chinese yam, Coix chinensis Tod. and Euryale ferox were added to wheat flour, the effect of mixed powder with different addition amount on the gelatinization characteristics, thermomechanical properties of dough and texture characteristics of steamed bread were analyzed by using rapid viscosity analyzer, Mixolab hybrid experiment instrument and texture analyzer. The results showed that as the amount of mixed powder added increased. The gelatinization viscosity, disintegration value, retrogradation value, gelatinization temperature, gelatinization time, dough water absorption, formation time and stability time of wheat flour gradually decreased, and cooking stability and protein weakening gradually increased. The hardness and chewiness of steamed …

Effects Of Ultrasound Combined Far-Infrared Radiation Drying On The Quality Of Banana Slices, Shi Xiao-Wei, Liu Yun-Hong

Food and Machinery

In order to investigate the quality characteristics of banana dried by ultrasound combined with far-infrared radiation drying, the banana slices were dried using ultrasound combined far-infrared radiation drying, and the drying was operated using the radiation temperature of 150, 210, 270 ℃ under the ultrasound power of 0, 30, 60 W. The effect of drying conditions on structure, rehydration ratio, shrinkage, color difference, total phenol content, VC content and antioxidant activity of banana slices were compared. The results showed that as the increases of radiation temperature and ultrasound power, the hardness values and shrinkage rate of banana slices decreased, and …

Research Progress On The Affecting Factors Of Heat-Induced Gelation Of Egg Albumin, Liu Xin-Ci, Lv Yun-Xiong, Sun Wei-Bao, Xu Fan, Yue Xiao-Xia, Zhang Gen-Sheng

Food and Machinery

This review summarized the microstructure, gelation process and the mechanism of gel properties of heat-induced from egg albumin. The effects of glycosylation, salt, enzymes, pH, adding NaCl or adjusting pH to synergistic glycosylation or enzyme on heat-induced gelation of egg white protein were discussed emphatically, and the research direction and application of heat-induced gelation of egg albumin were also prospected.

Research Progress On Fish Scale Collagen Edible Film, Li Yan-Long, Xiao Feng, Kang Huai-Bin

Food and Machinery

This study reviews the preparation process, properties (mechanical properties, thermal properties, barrier properties, etc.), modification methods, and applications of fish scale collagen films. The performance of the film can be significantly improved through molecular blending, but it is critical that the factors have not been studied in depth. Future research must solve the problems of film modification mechanism, aging mechanism, edibility, biodegradability, barrier property, safety, etc. from the perspective of industrial scale and commercialization, so as to make fish scales collagen films industrially feasible.

Optimized Preparation Of Maillard Reaction Products From Lysine And Xylose And Its Antibacterial Properties, Sun Wei-Wei, Cai Cao, Duan Li-Ping, Chen Sheng, Chen Hao, Jin Hao, Zhu Jie

Food and Machinery

In this study, Xylose and Lysine were used as raw materials. The browning level of Maillard reaction and the antioxidant activity of reaction products (MRPs) were taken as evaluation indexes, combined with response surface method to optimize and obtain optimal preparation conditions for Maillard reaction products (XL-MRPs) of the xylose-lysine system. In addition, the antibacterial properties of XL-MRPs have also been studied.The results showed that the optimal preparation conditions were: reaction time 120 min, pH 9.0, reaction temperature 109 ℃, Xylose to Lys molar ratio of 2.1∶1.0, XL-MRPs had the strongest oxidation resistance, and FRAP value was 1.33±0.16. XL-MRPs have …

Analysis Of Free Fatty Acids And Flavor Characteristics Of Sauced Duck From Jiangxi Local Brands, Liu Guang-Xian, Li Xue, Wang Li, Cheng Wen-Long, Chen Zhi-Wei

Food and Machinery

The free fatty acids and the flavor characteristics of the time-honored sauced duck, Huangshanghuang sauced ducks and Xiangtang sauced duck in Jiangxi province were investigated by gas chromatography-mass spectrometry (GC-MS) and amino acid analysis. The results showed that twenty-three kinds of free fatty acids were detected in the three kinds of sauced duck, which cis-9-oleic acid, palmitic acid and linoleic acid were the main free fatty acids in Jiangxi sauced duck. The glutamic acid content of Xiangtang sauced duck was higher than that of the other two sauced duck significantly, which was 9.27 g /100 g. Ninety-two volatile flavor compounds …

A New Design Method Of Dairy Falling-Film Evaporators Based On Uncertainty Theory, Zhang Xia, Tian Wei, Zhu Chuan-Qi, Zhang An-Chao, Wu Hai-Bin

Food and Machinery

In the process design of falling film evaporator, there are uncertainties in the design parameters and heat transfer model, which increases the difficulty of falling film evaporator design. Therefore, based on the Monte Carlo uncertainty method, the influence of the uncertainty of the parameters and the model in the three-effect falling film evaporator of dairy products on the design results is studied. The results showed that, compared with parameter uncertainty, the change of evaporator heat transfer performance caused by model uncertainty was more significant. By comprehensively considering the influence of parameter uncertainty and model uncertainty, a model ensembling method was …

Design And Process Optimization Of Reciprocating Decontaminating Device For Freshwater Fish, Xia Wei-Wei, Meng Qing-Guo, Zhang Chang-Yuan, Zhang Xu, Xu Zi-Xiang

Food and Machinery

In order to solve the problem that the fish belly is easy to scratch by the existing dirt-removing device , a kind of dirt-removing device for freshwater fish with reciprocating operation is designed. Taking carp as the test object, a sensory evaluation model of dirt-removing effect was established with visceral removal degree and fish belly integrity degree as evaluation indexes. The influences of process parameters such as starting position, feed speed and feed quantity of reciprocating operation of dirt-removing tool on dirt-removing effects were analyzed, and the process parameters were also optimized. By increasing the starting position and feeding rate, …

Effects Of 1-Mcp Combined With Membrane Air Conditioning Treatments On The Storage Quality Of Estuarine Bananas, Li Yan-Jiao, Zhang Yue-Jiang, Xing Jiang-Yan, Zhao Xiao-Ling, Ling Qi, Bao Yuan-Yun

Food and Machinery

To study the effects of 1-MCP (0.00, 0.08, 0.16, 0.32 g/L) on the quality of banana in Hekou, Yunnan Province The changes of soluble solids, hardness, disease index, yellowing index, pod enzyme (peroxidase), weight loss rate, respiration rate and titratable acid of banana during storage were studied. The results showed that: 1-MCP + PBI modified atmosphere preservation bag delayed soluble solids, disease index, yellowing index, pod enzyme activity compared with other treatments (P ≤ 0.05); 1-MCP + microporous membrane significantly delayed the decline of fruit firmness (P ≤ 0.05), inhibited the increase of titratable acid content (P ≤ 0.05), but …

Recognition Method Of Jujube Defects Based On Pca-Svm, Chu Song-Feng, Zhao Feng-Xia, Fang Shuang, Wu Zhen-Hua

Food and Machinery

In this study, three kinds of disease images of jujubes, black spots, broken heads and dry strips with high classification difficulty were used as research materials. The color moment and gray level co-occurrence matrix were used to extract 14-dimensional eigenvectors of the color and texture features of jujube, and the principal component analysis method was used to optimize the features. Four principal factors of eigenvectors were obtained and then used as the input of support vector machine. The crossover algorithm was used to determine the optimal support vector machine penalty parameter c and kernel function parameter g, which was used …

Effects Of The Combination Of Japonica Rice And Indica Rice On The Eating Quality Of Rice Noodles For Infants, Zhang Rong-Bin, Yan Jing-Chao, Gao Wen-Ming, Dai Zhi-Yong, Li Meng-Yi, Ren Guo-Pu

Food and Machinery

The basic physical and chemical indexes, cooking characteristics, gelatinization characteristics and texture characteristics of different combinations of japonica rice and indica rice were studied. The results showed that the content of amylose had an important influence on food quality. In terms of cooking characteristics, the lower the amylose content and the smaller the water absorption and expansion volume was, the higher the rice soup pH , the rice soup iodine color value and the rice soup dry matter content would be, and the better the cooking and brewing properties was. In terms of gelatinization characteristics, the lower the amylose content …

Research Status And Prospect Of Freezing And Thawing Technologies Of Aquatic Products, Zhang Ya-Jin, Jiao Yang

Food and Machinery

The principles, advantages and disadvantages of the traditional and novel freezing and thawing methods were elaborated, and the research status of the applications of freezing and thawing technologies in aquatic products were also summarized. The development direction of freezing and thawing technologies was then prospected in this review.

Contents, Discovery Editors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

Instructions For Authors, Discovery Editors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

Baseline Sensitivity To Demethylation Inhibitors Fungicides In Cercospora Spp. And Corynespora Spp. In Arkansas Soybeans, Evan Buckner, Alejandro Rojas

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

Cercospora spp. and Corynespora spp. are two common foliar fungal pathogens in Arkansas and other soybean-producing areas. Two primary diseases caused by Cercospora spp. are Cercospora Leaf Blight (CLB, caused mainly by C. kikuchii) and Frogeye Leaf Spot (C. sojina). Over time, many fungicides used to combat these diseases have become ineffective as the pathogens have developed a resistance to them. The class of the fungicide in question is Triazoles [Demethylation Inhibitors (DMI)–FRAC 3]. Fifteen isolates consisting of Corynespora cassiicola, Cercospora sojina, and Cercospora flagellaris were tested to determine baseline sensitivities using serial dilutions (0, 0.01, 1, 10, 50 mg/L) …

Letter From The Dean, Deacue Fields

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

Discovery: The Student Journal Of Dale Bumpers College Of Agricultural, Food And Life Sciences - Volume 22 2021, Several Authors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

Featured Faculty Mentor And Student Explore The Dynamics Of This Research Relationship, Alejandro Rojas, Evan Buckner

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

Letter From The Faculty Editor, Beth Kegley

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

Procuring Produce In A Rural, Appalachian County: A Thematic Analysis Of Community Member Experiences, Caroline Blincoe

Theses and Dissertations--Nutrition and Food Systems

Rates of obesity and other health disparities are exceptionally high in rural Appalachian counties compared to the nation as a whole. One causal factor of these health disparities in Appalachian counties is the inequitable allocation of healthy food. Food insecurity and the local food environment are large drivers for obesity experienced by Martin County, Kentucky residents. Successful socioecological model (SEM) and policy, systems, and environmental (PSE) interventions have shown promising results in reducing obesity and enhancing food security in this population. Through the transcription of semi-structured focus group interviews, thematic analysis aimed to obtain perspectives on the local food system. …

Developing Whey Protein Encapsulated Probiotics And Evaluating Environmental Listeria Using Whole-Genome Sequencing, Shayanti Minj

Electronic Theses and Dissertations

In this study, a novel value-added dairy-based health formulation was developed using whey protein hydrolysate and probiotic organisms. In the first part of the study, different forms of whey proteins, concentrate WPC80, isolate WPI90, and hydrolysates WPH10, WPH15 and WPH20 were screened for bioactivities (antimicrobial, antioxidant, and antihypertensive activity). Hydrolysate WPH10, exhibiting the highest bioactivities was conjugated with maltodextrin. A batch of 2L conjugated solution was spray dried in a Niro drier with an inlet and outlet temperature of 200⁰C and 90⁰C, and alternatively, freeze dried at −80 °C under 50 mTorr vacuum. The bioactivities of the conjugated samples were …

A Genetic Investigation Of Anticoagulant Rodenticide Resistance In Mus Musculus Of Western Australia: Implications For Conservation And Biosecurity, Bridget Judith Maria Lucrezia Duncan

Theses : Honours

Human-wildlife interactions have developed since the agricultural revolution that occurred 10,000 years ago, and the expansion of commensal species’ geographical distribution led to conflicts that prompted humans to adopt a wide range of control methods for pest species (Horvitz, Wang, Wan, & Nathan, 2017; Riyahi et al., 2013; Saraswat, Sinha, & Radhakrishna, 2015). The order Rodentia is characterised by a high number of successful invaders, which humans have attempted to manage with the use of anticoagulant rodenticides (ARs) since the 1940s (Capizzi, Bertolino, & Mortelliti, 2014; Ruiz-Suárez et al., 2014). The rise and spread of a genetic mutation that infers …

Restoration Through Regeneration: An Analysis Of Agriculture In The United States, Rebecca Norine Graham

Capstone Showcase

The industrialization of agriculture in the mid-twentieth century has revolutionized global food systems, with enough food produced annually to sustain 10 billion people on a planet of only 7.8 billion people. Such a high-yielding agricultural system comes at a great cost to the Earth’s ecosystem, as industrialized farming has taken on factory-like production methods. Particularly harmful is the livestock sector, with ruminating animals such as cattle contributing to rising global temperatures and environmental degradation. The environmental destruction caused by industrialized animal agriculture can be halted and ultimately reversed through regenerative agriculture. Regenerative agriculture is a restorative farming practice that promotes …

Valorization Of Xylan In Agroforestry Waste Streams, Harrison Appiah

Graduate Theses, Dissertations, and Problem Reports (ETD)

Valorization of Xylan in Agroforestry Waste Streams.

Harrison Appiah

Microwave-assisted deep eutectic solvent and gamma-valerolactone metallic chloride catalyzed conversion of xylan to furfural were investigated using a 2x3 factorial experimental design at two levels of percent microwave power, reaction time, and catalyst concentration. The levels of each factor studied were (20%, 60% microwave power, 2, 4 minutes, and 10, 20mg) respectively. The effect of three metallic chloride catalysts (LiCl, FeCl3.6H20, CuCl2) on the conversion of xylan to furfural was also investigated. The gamma-valerolactone-ferric chloride sent system exhibited the highest mean yield of furfural (56.50%). The next highest furfural yield of …

Assessment Of Grain Safety In Developing Nations, Jose R. Mendoza

Department of Food Science and Technology: Dissertations, Theses, and Student Research

Grains are the most widely consumed foods worldwide, with maize (Zea mays) being frequently consumed in developing countries where it feeds approximately 900 million people under the poverty line of 2 USD per day. While grain handling practices are acceptable in most developed nations, many developing nations still face challenges such as inadequate field management, drying, and storage. Faulty grain handling along with unavoidably humid climates result in recurrent fungal growth and spoilage, which compromises both the end-quality and safety of the harvest. This becomes particularly problematic where there is little awareness about health risks associated with poor …

Economic Contribution Of Agriculture And Food To Arkansas' Gross Domestic Product 1997-2019, Leah English, Jennie Popp, Wayne Miller

AAES Research Reports and Research Bulletins

Agricultural production, processing, and retail industries are major contributors to Arkansas’ GDP. Agriculture contributes to the state economy through direct agricultural production, value-added processing, and agricultural retail activities. The Agriculture and Food Sector, which is comprised of agricultural production, processing, and retail industries, promotes economic strength through various interactions with other industries. The use of non-agricultural goods and services as inputs into the agricultural sector promotes diversified growth in Arkansas’ economy and thus plays a vital role in maintaining economic stability throughout the state. This report 1) compares the relative size of the Agriculture and Food Sector in Arkansas with …

Determination Of Vitamin A And E In Fodder Concentrates And Cow Milk From The Region Of Gostivar, North Makedonia, Ilmije Vllasaku

UBT International Conference

Given the importance of oxidative effects on the health of dairy cows and their milk production, a study has been carried out on the concentration of antioxidants, vitamins A and E. The main objective of this research was to determinate the vitamins A and E in fodder concentrate and raw cow milk from the region of Gostivar, North Macedonia. The amount of vitamin A in fodder concentrate was 23.92 mcg/100 g, while the amount of vitamin E was 35.7mcg/kg. The amount of vitamin A in raw cow milk was 38.25 mcg/100 g, while the amount of vitamin E was 1.09 …