Food Science Commons^™

Design Of Steamed Bread Machine Production Line Based On Ahp And Triz Theory, Fu Xiao-Li, Xu Qiao, Yang Shu-Feng, Zhang Bin

Food and Machinery

Objective: In view of the problems of low human-computer interaction, insufficient modeling aesthetics and lack of design characteristics in the production line of steamed bread machine, the fuzzy evaluation method combined with AHP and TRIZ is used for the innovative design. Methods: The key areas of positioning design were obtained by analytic hierarchy process. The TRIZ standard engineering parameters were used to analyze the contradiction and construct the contradiction matrix. The invention principle was used to find the optimal solution of the design scheme, and the matter field analysis method was introduced to solve the specific practical problems of the …

The Influence Of Modifying Methods On The Adsorption Of Methylene Blue By Moringa Oleifera Seed Shelling Biochar, Dong Cheng, Li Mei-Ping, Guo Cai-Xia, Yu Li-Gang

Food and Machinery

Objective: The adsorption performance of the seed-shell biochar from Moringa oleifera prepared under different technological conditions on methylene blue was investigated in this study. Methods: The magnetic seed shelling biochar (Fe₃O₄-MOS) and modified seed shelling biochar (KOH-MOS) were prepared by ultrasonic-assisted K₂CO₃-Fe₃O₄ co-impregnation pyrolysis and KOH impregnation pyrolysis at 1 000 ℃, respectively. The physicochemical properties of the samples were characterized by XRD, SEM and FTIR. On this basis, the adsorption characteristics of the two kinds of biochar for methylene blue (MB) solution were determined by equilibrium adsorption method. …

Research On Multi-Party Evolutionary Game Model Of Food Supply Chain Under The Application Of Blockchain, Ren Li-Xiao, Song Xuan, Zhang Li, Zhou Na

Food and Machinery

Objective: The influencing factors of blockchain application in food supply chain and the behavior problems of all participants in food supply chain are worth exploring. Methods: Using the evolutionary game method, the tripartite game model of food enterprises, government and consumers was constructed, and the replication dynamic equation was established; The effects of different initial values, access cost, premium coefficient and information authenticity on the choice of tripartite strategy were analyzed. Results: The steady state of the system was related to the proportion of the initial strategy population. The block link in cost had a great impact on the strategic …

Effects Of Different Fixation Methods On The Quality Of Green Tea Processed By Purple Bud Leaves, Song Xian-Ying, Huang Yan-Mei, Cui Li-Dan, Xiao Wen-Jun, Gong Zhi-Hua

Food and Machinery

Objective: To explore the best fixation method of purple bud green tea. Methods: Using two or three leaves and a bud of self-selected purple bud strain 9803 as raw materials, fresh leaves were treated by microwave, pan-frying, steam and hot air to prepare green tea, and the representative green tea samples were selected for sensory evaluation and quality analysis of taste and aroma. Results: Among the four methods of fixation, the comprehensive score of sensory evaluation of microwave green tea was the highest (89.65), and the main physical and chemical components of microwave green tea, water extract, tea polyphenols, anthocyanins, …

Analysis For Smoke Release Characteristics Of Several Central Electrical Heated Cigarettes, He Hong-Mei, You Xiao-Juan, Liu Xian-Jun, Zhu Xian-Yan, Wang Ming-Hui, Shi Huai-Bin, Xu Ru-Yan

Food and Machinery

Objective: Studied the smoke emission characteristics of central electric heating cigarette. Methods: The release amount and stability of total and puff-by-puff mainstream smoke were investigated by taking seven domestic cigarettes （Cigarettes A-G） and one foreign cigarette （Cigarette H） as the samples. The factors that may influence smoke release stability were discussed. Results: ① The transfer ratios of nicotine and glycerol in Cigarettes H were the lowest; ② The smoke release stability of Cigarettes H was the highest; ③ The release behavior of TPM, nicotine and glycerol on a puff-by-puff basis all showed increase-decrease trend with the increase of puff sequence, …

Study On Photoelectric Detection Method Of Nitrite Content In Food With Microfluidic Mixer Chip, Pang Hao-Ran, Xie Jia-Qing, Guan Qi-Feng, Meng Xiao-Yu, Sun Ru-Qian, Zhou Fu-Yang

Food and Machinery

Objective: A high-precision, low-cost quantitative and rapid detection method of nitrite in food based on photoelectric detection principle was proposed, and a portable nitrite detector equipped with microfluidic mixer chip was constructed. Methods: The microfluidic mixer chip was designed to realize the rapid mixing of test samples. The mixing efficiency of the chip was verified by peristaltic fluid simulation. The influence of UV curing parameters on the microfluidic mixer chip channel accuracy was analyzed, the microfluidic mixer chip was prepared. The photoelectric detection system of nitrite was designed and established. The relationship between nitrite content and induced voltage was analyzed, …

An Aptamer Colorimetric Method Was Established To Detect Chloramphenicol In Eggs Based On Dnase-Catalyzed Reaction, Cheng Hui, Liu Shun, Li Bo, Huang Yu-Lan, Zhou Tao

Food and Machinery

Objective: A new method for the rapid detection of chloramphenicol in eggs was established, by preparing the aptamer magnetic bead complex, based on the mechanism of inhibiting the catalytic color reaction between the DNase and heme. Methods: The aptamer and DNase was combined through complementary base pairing, and it was combined with aptamer composite magnetic beads. Furthernore, by adding different concentrations of chloramphenicol solution, the DNase and chloramphenicol nucleic acid adaptation was disintegrated by dissociation of DNase catalytic chromogenic reaction combined with hemoglobin. Results: The linear range of chloramphenicol was 0.001~100.000 mg/kg, and the absorbance was linearly correlated with the …

Real Time Detection Method Of Fruit Defects Based On Deep Learning, Zhou Sheng-An, Huang Geng-Sheng, Zhang Yi-Yun, Gao Dong-Fa

Food and Machinery

Objective: This study aimed to optimize and improve the CenterNet method for detecting fruit defects. Methods: the lightweight convolutional neural network of MobileNetV3 was used to replace the original backbone network of CenterNet accelerate the detection speed, improve the module of MobileNetV3, enhance the detection ability of the model for small and medium-sized defective blocks of fruit, and optimize the pre detection stage of CenterNet to increase its detection accuracy. Results: The recognition rate of significant defects such as apples with diameter > 4 mm was 99.7%, and the detection speed was 113 FPS, with the model volume of 1.31 MB. …

Simulation Analysis Of Tobacco Leaf Redrying And Drying Process Based On Comsol, Qin Ji-Wei, Wang Li-Hua, Jiang Wei, Wang Jiong-Li, Jia Tong-Peng

Food and Machinery

Objective: To study the drying shrinkage mechanism of tobacco leaves during the redrying process. Methods: Based on the theory of porous media and elasticity, combined with Fourier's law and Fick's law, the numerical simulation of the thermal expansion, hygroscopic expansion and temperature coupling process in the tobacco leaf drying process was realized. Results: During the redrying process, the maximum stress occurred when the tobacco leaves were dried for about 3 minutes. The moisture stress during the drying process was much greater than the thermal stress; During the low-temperature slow-curing process, the internal moisture evaporation rate of the tobacco leaves was …

Hypoglycemic Effect Of Perilla Leaf Extract On Type 1 Diabetic Mice, Qi Xin, Lu Xin-Tong, Lin Chang-Qing, Cui Cheng-Bi

Food and Machinery

Objective: This study focuses on exploring the effect of perilla leaf extract on hypoglycemic in type 1 diabetic mice. Methods: Streptozotocin （STZ） was used to induce the establishment of type 1 diabetes （T1DM） mouse model, and then the normal group, model group, perilla leaf extract high-dose group （400 mg/kg）, perilla leaf extract low-dose group （200 mg/kg）, positive group （150 mg/kg） were investigated. During the test, the food intake and water consumption of the mice were recorded, and the fasting blood glucose （FBG） of T1DM mice was measured every week, and the glucose tolerance level （OGTT） was measured on the 28th …

Detection Of Mixing Proportion Of Stem By Near Infrared Spectroscopy Combined With Linear Non-Negative Regression Coefficient Regression Method, Liu Jing, Hu Jian-Xi, Yang Fang-Fang, Gao Hui, Yang Pan-Pan

Food and Machinery

Objective: To establish a rapid method for the determination of stem content in finished tobacco by near infrared spectroscopy. Methods: The finished tobacco mixed with different proportion of stem silk （5%, 8%, 11% and 14%） was used as the test object. The near infrared spectrum information of pure stem silk, pure leaf silk and tobacco mixed with different proportion of stem silk was collected, respectively. Orthogonal Partial Least Squares Discrimination Analysis （OPLS-DA） was used to identify the overall difference of the near infrared spectral information of the above three kinds of samples. Variable Importance for the Projection （VIP） feature spectrum …

Evaluation Of Cigarette Quality Stability Based On Similarity Analysis Of Smoke Components, Zhang Wei, Yu Qi-Chang, Qi Da-Wei, Zhou Yan, Wu Da, Lu Jie

Food and Machinery

Objective: The evaluation methods of cigarette quality stability based on different indexes are compared, which provides a theoretical basis for the selection of evaluation indexes of cigarette product quality stability. Methods: Used the heart-cutting two-dimensional gas chromatography （HC-2D-GC） to analyze the key components in cigarette smoke components. The fingerprint of qualified products was established, and the stability of cigarette product produced in different places within three years was evaluated by Euclidean distance similarity. The results were compared with the method based on the conventional parameters of cigarette smoke. Results: The smoke stability evaluation method based on the conventional smoke gas …

Advances In Research On The Rapid Detection Of Probiotics, Lu Xiu-Li, Li Bai-Liang, Huo Gui-Cheng, Yue Ying-Xue, Guo Jia-Yao

Food and Machinery

The rapid detection methods of traditional probiotics， the next-generation probiotics based on immunological detection technology and molecular biology detection technology was reviewed, and the rapid detection technology development was prospected.

Research Progress On Biological Activity And Quality Control Of Panacis Japonici Rhizoma, Shen Pei-Yao, Zhang Ye, Li Yu-Qin, Yan Jian-Ye, Wang Yuan-Qing

Food and Machinery

The biological activities of Panax japonicus, including the effects on nervous system, digestive system, cardiovascular and cerebrovascular system, immune system, endocrine system and other systems were summarized and the quality control of saponins, nucleosides, polysaccharides and amino acids in Panax japonicus was analyzed in this paper. And its future research was prospected.

The Development Experience Of British Food Gdas Labeling And Several Enlightenments To China, Huang Ze-Ying, Huang Bei-Xun

Food and Machinery

This study carried out a case study on food GDAs （Guideline Daily Amounts） labeling in British. It was found that GDA_S labeling which has been implemented for over 20 years, changed from BOP （Back of Package） labeling to FOP labeling. The labeling shows the amount of energy, sugar, fat, saturated fat, and salt per serving, as well as the percentage of the recommended daily intake by using the specific nutrient system measurement model. The labeling lacks of color coding and visual icon, and its implementation is not as effective as most FOP labels. Therefore, it is suggested to display …

Food Science, Tech Program Offers Huskers Valuable Real-World Experience, Annie Albin

Nebraska Innovation Campus Materials

A program launched by a student experience is helping Huskers in food science and technology majors gain hands-on experience while making positive real-world impacts.

Offered through the University of Nebraska–Lincoln’s Department of Food Science and Technology, the Food Processing Center’s Student Rotation program allows undergraduates to participate in four lab experiences. Those labs — dairy plant, pilot plant, product development lab and sensory lab — were first completed by a student who just happened to take them through the four years of her collegiate career

Evaluating Consumers’ Perception Of Gluten-Free/Clean-Label Muffins, Vanesa Chicaiza

LSU Master's Theses

The gluten-free-natural-ingredient (GF/NCL) product demand is globally increasing and driven by the growing prevalence of celiac-diseases. Nevertheless, the quality of GF product is often inferior compared to wheat-flour counterparts due to the removing of gluten, which, compromises the appearance, structure, and nutritional value. The addition of fiber into GF/NCL products has been considered to improve nutritional values while maintaining quality attributes. According to the US-FDA, a product containing ≥2.5 grams of fiber/serving can be claimed as a “good-source-of-fiber.” However, adding dietary fiber to baked products affects their qualities, and hence possibly lowering product acceptability.

The main objective of this research …

Mathematical Model Describing The Behavior Of Biomass, Acidity, And Viscosity As A Function Of Temperature In The Shelf Life Of Yogurt, Manuel Alvarado, Paul A. Valle, Yolocuauhtli Salazar

Annual Symposium on Biomathematics and Ecology Education and Research

No abstract provided.

Simulated Annealing-Based Hyperspectral Data Optimization For Fish Species Classification: Can The Number Of Measured Wavelengths Be Reduced?, John Chauvin, Ray Duran, Kouhyar Tavakolian, Alireza Akhbardeh, Nicholas Mackinnon, Jianwei Qin, Diane E. Chan, Chansong Hwang, Insuck Baek, Moon S. Kim, Rachel B. Isaacs, Ayse Gamze Yilmaz, Jiahleen Roungchun, Rosalee S. Hellberg, Fartash Vasefi

Food Science Faculty Articles and Research

Relative to standard red/green/blue (RGB) imaging systems, hyperspectral imaging systems offer superior capabilities but tend to be expensive and complex, requiring either a mechanically complex push-broom line scanning method, a tunable filter, or a large set of light emitting diodes (LEDs) to collect images in multiple wavelengths. This paper proposes a new methodology to support the design of a hypothesized system that uses three imaging modes—fluorescence, visible/near-infrared (VNIR) reflectance, and shortwave infrared (SWIR) reflectance—to capture narrow-band spectral data at only three to seven narrow wavelengths. Simulated annealing is applied to identify the optimal wavelengths for sparse spectral measurement with a …

A Sugarcane G-Protein-Coupled Receptor, Shgpcr1, Confers Tolerance To Multiple Abiotic Stresses, Manikandan Ramasamy, Mona B. Damaj, Carol Vargas-Bautista, Victoria Mora, Jiaxing Liu, Carmen S. Padilla, Sonia Irigoyen, Tripti Saini, Nirakar Sahoo, Jorge A. Dasilva, Kranthi K. Mandadi

School of Integrative Biological & Chemical Sciences (Formerly Dept. of Biology)

Sugarcane (Saccharum spp.) is a prominent source of sugar and serves as bioenergy/biomass feedstock globally. Multiple biotic and abiotic stresses, including drought, salinity, and cold, adversely affect sugarcane yield. G-protein-coupled receptors (GPCRs) are components of G-protein-mediated signaling affecting plant growth, development, and stress responses. Here, we identified a GPCR-like protein (ShGPCR1) from sugarcane and energy cane (Saccharum spp. hybrids) and characterized its function in conferring tolerance to multiple abiotic stresses. ShGPCR1 protein sequence contained nine predicted transmembrane (TM) domains connected by four extracellular and four intracellular loops, which could interact with various ligands and heterotrimeric G …