Food Science Commons^™

Identification Of Psoraleae Fructus Illegally Added In Mixed Wine And Mixed Tea Based On High Resolution Mass Spectrometry Library And Diagnostic Ratio Of Characteristic, Gao Fang, Wu Wan-Qin, Wang Bin, Liu Guo-Jiao, Jiang Feng

Food and Machinery

Objective:A method based on the high resolution mass spectrometry library and diagnostic ratio of characteristic components was established to identify the illegally added psoraleae fructus in wine and tea.Methods:High resolution mass spectrometry library of psoraleae fructus was constructed by high performance liquid chromatography quadrupole time of flight mass spectrometry (HPLC-TOF-MS) for preliminary screening. Combined with the diagnostic ratio method of the characteristic components by, high performance liquid chromatography, psoraleae fructus in different 20 samples of mixed wine and mixed tea from different picking time and origin was tested and analyzed The diagnostic ratio of characteristic component peak area, which …

Comparison Of Active Components And Antioxidant Activity Of Non-Medicinal Parts Of Polygonatum Cyrtonema, Wang Tian-Mei, Wang Hua-Lei, Li Dan-Dan, Chen Song-Shu, Pan Ke-Qin

Food and Machinery

Objective:This study focuses on improving the comprehensive utilization rate of Polygonatum cyrtonema.Methods:The contents of total flavonoids, total saponins and total phenols from roots, stems, leaves, flowers and buds, of P. cyrtonema were determined. The scavenging rates of DPPH·, ·OH and nitrites in extracts of above tissue were measured and compared as well. Results:The contents of total flavonoids and total phenols five different kinds of non-medicinal tissue were in the same order, in which from highest to lowest was, leaves, buds, flowers, stems and roots, and the content of total saponins in flower was the highest In terms of …

Purification Processing Of Pigment From Boletus Eduliswith Macroporous Resin And Its Antioxidant Capacity, Guo Lei, Zi Lu-Xi, Cui Qi, Zhou Yu, Qiu Hui-Ting, Kan Huan

Food and Machinery

Objective:The aim of this work is to obtain the optimal purification process of pigment from Boletus edulis by macroporous resin, and study its antioxidant activity. Methods:Based on the static and dynamic test, the influence of resin type, sample concentration, pH, loading flow ratio, ethanol concentration and elution flow ratio on the adsorption and desorption activity of Boletus edulis pigment were investigated to determine the optimal purification conditions. Then the structure, the DPPH·, ABTS+· and ·OH scavenging activity of the Boletus edulis pigment purified was also evaluated. Results:AB-8 was the most suitable type of macroporous resin and the optimum …

Study On The Effect Of Chrysanthemum Polysaccharide On Hypoglycemic In Type 2 Diabetic Rats, Zhao Kai-Di, Wang Qiu-Dan, Lin Chang-Qing

Food and Machinery

Objective:This study aimed to investigate the hypoglycemic effect of chrysanthemum polysaccharide on type 2 diabetes (T2DM) rats.Methods:The chrysanthemum polysaccharides were extracted by water extraction and alcohol precipitation. After feeding rats with high-fat and high-sugar feed for 6 weeks, STZ (30 mg/kg·BW) was injected intraperitoneally to establish a T2DM rat model, and records were recorded during the experiment. Rat body weight, food intake, water consumption, fasting blood glucose (FBG) was measured every two weeks, and glucose tolerance (OGTT) test was performed in the last week of the test; the insulin (INS) level was measured by Elisa method, and insulin resistance …

The Quality Change Of Yunnan Xinping Pickles During Fermentation, Wang Xin-Rui, Li Hong, Ma Yi-Ran, Liu Bi-Qin, Shi Qiao

Food and Machinery

Objective:This study aimed to obtain the best fermentation time of Yunnan traditional Xinping pickles. Methods:Sensory evaluation and texture measurement of Xinping pickles under different fermentation times were carried out, and the pH value and nitrite content were determined according to the national standard method. Results:As the fermentation progressed, the sensory aspect of Xinping pickles gradually increased in color and texture, and stabilized after 6 days. The aroma and taste scores increased firstly, and then began to decline after 7 days. In terms of texture, the chewiness of the shank started to stabilize from Day 7. The pH value …

The Adaptation Of Export-Scale Urban Farmers Amid The Covid-19 Pandemic In Bandung Metropolitan, Kinanti Indah Safitri, Oekan Soekotjo Abdoellah, Budhi Gunawan, Parikesit -, Yusep Suparman, Akhmad Zainal Mubarak, Margareth Pardede

The Qualitative Report

These days, urban agriculture is more than a hobby. It has expanded into a local commercial business, even to an export scale. However, urban farmers who have commercialized their products must adapt to the COVID-19 pandemic situation, which has impacted many aspects of global life. This research used a mixed-method approach. We collected quantitative data from 107 respondents on the household commercialization index, income level, and education level of export-scale-urban farmers in the Bandung metropolitan area, West Java, Indonesia. We also used qualitative data to determine how farmers were adapting to difficult situations due to the COVID-19 pandemic. This information …

International Rice Outlook: International Rice Baseline Projections 2021–2031, A. Durand-Morat, S. Bairagi

AAES Research Reports and Research Bulletins

The war in Ukraine and the lingering effects of the COVID-19 pandemic are pushing input costs to record levels. Although rice prices have increased some in the last several months, production costs have increased more than proportionally, undermining rice profitability.

We project global rice production will surpass global rice consumption for most of the coming decade, with a small deficit developing by the end of the projected period.

The projected growth in production is almost exclusively due to productivity gains since the global rice area is projected to increase only marginally by 2029–2031.

The projected growth in global rice consumption …

Differential Effects Of Protein Isolates On The Gut Microbiome Under High And Low Fiber Conditions, Marissa Behounek

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

Protein isolates are a growing market share in the food industry both as food ingredients and as supplements. All dietary habits can influence and alter the gut microbiome; however, little is known about how protein isolates from different sources will change the composition and function of the gut microbiota under high and low fiber conditions. The study aims to determine the microbiome response to plant and animal protein isolates under high- and low-dietary fiber (H/LDF) conditions. Six commercially available protein isolates (beef, egg white, milk, pea, and two soy protein isolates) were subjected to in vitro enzymatic digestion and dialysis …

Molecular Mechanisms Underlying Mucosal Attachment And Colonization By Clostridioides Difficile, Ben Sidner

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

Clostridioides difficile is a Gram-positive, spore-forming, anaerobic bacterium which causes gastrointestinal disease and is a leading cause of nosocomial infections. Although infection typically occurs following antibiotic therapy, in recent years there has been an increase in infections which are not preceded by antibiotic use. Additionally, community-associated infections and rates of disease recurrence have increased. While it is understood that a healthy gastrointestinal microbiota provides protection against infection, the molecular mechanisms which underly C. difficile's ability to colonize and persist in the gut are mostly unknown. Building on work from others that suggests C. difficile associates with the outer mucus …

Micronutrient Fortified Soymilk Processing Supplemental Data Tables, Michael L. Dunn, Oscar A. Pike, Bradley J. Taylor, Dallin M. Hardy

ScholarsArchive Data

This data set contains Supplemental Tables (created using Microsoft Word) for the following manuscript submitted for publication:

Vitamin stability and sensory acceptability in micronutrient-fortified soymilk prepared by small-scale batch processing

Authors: Dallin M. Hardy, Oscar A. Pike, Bradley J. Taylor, Michael L. Dunn

The above manuscript was prepared with modifications from portions of the M.S. thesis of Dallin M. Hardy, which can be found at: https://scholarsarchive.byu.edu/etd/8284/

The data set includes five supplementary tables containing data values for vitamin retention during processing and sensory acceptance of micronutrient fortified soymilk. The data in these tables had no statistically significant differences between treatments.

You Eat How You Think: A Review On The Impact Of Cognitive Styles On Food Perception And Behavior, Thadeus L. Beekman, Philip Glen Crandall, Han-Seok Seo

Food Science Faculty Publications and Presentations

Sensory perception is understood to be a complex area of research that requires investigations from a variety of different perspectives. Although researchers have tried to better understand consumers' perception of food, one area that has been minimally explored is how psychological cognitive theories can help them explain consumer perceptions, behaviors, and decisions in food-related experiences. The concept of cognitive styles has existed for nearly a century, with the majority of cognitive style theories existing along a continuum with two bookends. Some of the more common theories such as individualist-collectivist, left-brain-right-brain, and convergent-divergent theories each offered their own unique insight into …

Peanut Kernel Integrity Detection Based On Deep Learning Convolution Neural Network, Zhang Jun-Feng, Shang Zhan-Lei

Food and Machinery

Objective: To accurately distinguish intact peanut, nut damaged peanut and epidermis damaged peanut. Methods: A peanut seed integrity detection scheme based on deep learning convolution neural network (CNN) was proposed. The peanut seed color selection system was established and a peanut seed image database was also established; The improved density peak clustering (DPC) algorithm was used to adaptively compress the CNN convolution kernel to effectively balance the network depth and operation efficiency; The improved sparrow search algorithm was used to optimize the CNN super parameter configuration and network structure, and the CNN model suitable for peanut grain integrity detection was …

Determination Furfurals In Tea Products By Quechers-Isotope Is-Gc-Ms/Ms, Liu Can-Di, Chen Bo, Yin Fang-Ping, Zeng Hui

Food and Machinery

Objective: This study aimed to establish a new method for detecting furfurals in tea. Methods: A gas chromatography tandem mass spectrometry (GC-MS/MS) method was established for the simultaneous determination of furfural, 5-methylfurfural, 5-hydroxymethylfurfural and 2-Acetylfuran in tea. The sample pretreatment method and GC-MS/MS method were optimized. Furfural-D4was used as the internal standard. The sample was extracted by acetonitrile, treated and purified by QuEChERS method, and determined by GC-MS/MS multi reaction monitoring (MRM). Results: The four furfurals showed good linear relationship in the mass concentration range of 1.25~200.00 μg/L, with the correlation coefficient ≥0.999 0, and the detection limit (S/N …

Research On Food Safety Supervision System In Chinese Cross-Border E-Commerce Market, Shi Gao-Yan

Food and Machinery

The development status of the cross-border E-commerce market was introduced, and the shortcomings of the current cross-border e-commerce food safety supervision system in my country was analyzed. Moreover, the direction of food safety supervision system construction in cross-border E-commerce was also discussed, from the following aspects of the food information traceability system, food safety risk early warning system, enterprise credit management system and consumer rights protection system.

Uncertainty Evaluation Of Cadmium Content In Kelp (Laminaria Japonica) By Graphite Furnace Atomic Absorption Spectrometry, Liu Lan-Ying, Lu Xin, Li Ying, Luo Tu-Yan

Food and Machinery

Objective: To improve the accuracy of the results of cadmium (Cd) content in kelp (Laminaria japonica) by graphite furnace atomic absorption spectrometry (GF-AAS). Methods: The concentration of Cd element in kelp sample was measured by using GF-AAS after microwave digestion according to the standard of GB 5009.15—2014. Combining with the experimental process and mathematical model, the possible sources of measurement uncertainty were firstly identified, then the components of each standard uncertainties were calculated, and finally each parameter of uncertainties was synthesized, and the whole uncertainty was evaluated. Results: when the value of Cd concentration in kelp was 0.202 …

The Legal Regulation Problem Of False Food Advertisement And Its Solution, Meng Jing

Food and Machinery

In this paper, the current legal system regarding deceptive food advertisements in China has been discussed deeply and issues of current legal system have been analyzed. To solve the issues, a way for optimizing food legal system was explored and several measures which assist to improve the legal system for eliminating deceptive food advertisements have been proposed. Overall, relevant legal regulations published domestically and intenationally should be sorted out and the law enforcement of government sectors should be enhanced to constrain people who want to advertise deceptive food information.

Study On Flow Channel Distribution Of Different Twin Screw Extruder Under Different Screw Contact State, Shang Jia-Wei, Zhang Li-Mei, Huang Zhi-Gang, Zhang Yi-Wei, Li He

Food and Machinery

Objective: In order to explore the distribution law of the flow channel of polylactic acid in different screw contact states of the counter-rotating twin-screw extruder. Methods: Partially meshing screw and non-meshing screw were established by Solidworks software. Numerical sim-ulation was carried out using POLYFLOW fluid simulation software. The pressure field, shear rate field and viscosity field of polylactic acid fluid under different contact states of three screws were compared. Results: The counter-rotating twin-screw extruder in the partially meshed state has better pressure-building ability and dispersing and mixing ability for polylactic acid. Conclusion: The extrusion effect of polylactic acid in the …

Research On The Application Of Minimalist Style In Food Packaging Design, Chao Xin-Jiao, Zhang Si-Jia

Food and Machinery

This paper introduces the origin of minimalism, discusses the advantages of minimalism style in food packaging design, and expounds the application of minimalism style in food packaging design from four aspects: Food packaging color, graphics, modeling and materials.

Effects Of Natural Compound Preservative And Its Vacuum Synergy On The Shelf Life Of Pre-Conditioned Pork Filling Stuffing, Liu Ping-Yun, Wang Jun-Ru, Ding Yi-Dan, Zhang Gen-Sheng

Food and Machinery

Objective: To study the effect of food preservatives on the freshness of pre-conditioned pork filling stuffing and to solve the problem of easy spoilage and very short shelf life of pre-conditioned pork filling stuffing. Methods: The changes of physicochemical and microbiological indexes of the pre-conditioned pork filling treated with vacuum-packed co-combination preservatives during storage were determined using the total number of colonies or TBA values as evaluation criteria. Results: The optimal ratio of preservatives were as followed: 0.049% nisin, 0.207% D-isoascorbate sodium, 0.029% rosemary extract. Vacuum-packed synergistic compounding preservative treatment can effectively delay the changes of total bacterial colony, …

Effect Of Chitosan On The Waterless Preservation Of Urechis Unicinctus, Li Zhong-Kun, Li Zi-Xuan, Liu Chen-Hao, Liu Chun-E

Food and Machinery

Objective: The aim of the study was to decrease the transportation cost while reducing the nutrition loss of Urechis unicinctus. Methods: Chitosan was used for pretreatment of Urechis unicinctus, and the changes of the main nutritional and physiological indexes of the three groups i.e., control group, after waterless preservation group and recovered group, were measured. Results: The optimal concentration of chitosan was 3 g/L. After being pretreated by chitosan, the survival rate of Urechis unicinctus could reach 67% after 64 h of waterless preservation. The survival rate, muscle glycogen, water holding capacity of the experimental group were all …