Food Science Commons^™

Advancing Risk Assessment: Mechanistic Dose-Response Modelling Of Listeria Monocytogenes Infection In Human Populations, Ashrafur Rahman, Daniel Munther, Aamir Fazil, Ben Smith, Jianhong Wu

Mathematics and Statistics Faculty Publications

Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited. The utility of characterizing the effects of strain variation and individual/subgroup susceptibility on dose-response outcomes has motivated the search for new approaches beyond the popular use of the exponential dose-response model for listeriosis. While descriptive models can account for such variation, they have limited power to extrapolate beyond the details of particular outbreaks. By contrast, this study exhibits dose-response relationships from a mechanistic basis, quantifying key biological factors involved in pathogen-host dynamics. An …

Law Library Blog (August 2018): Legal Beagle's Blog Archive, Roger Williams University School Of Law

Law Library Newsletters/Blog

No abstract provided.

The Msdin Family In Amanitin-Producing Mushrooms And Evolution Of The Prolyl Oligopeptidase Genes, Hong Luo, Qing Cai, Yungjiao Luli, Xuan Li, Rohita Sinha, Heather E. Hallen-Adams, Zhu L. Yang

Department of Food Science and Technology: Faculty Publications

The biosynthetic pathway for amanitins and related cyclic peptides in deadly Amanita (Amanitace ae) mushrooms represents the first known ribosomal cyclic peptide pathway in the Fungi. Amanitins are found outside of the genus in distantly related agarics Galerina (Strophariaceae) and Lepiota (Agaricaceae). A long-standing question in the field persists: why is this pathway present in these phylogenetically disjunct agarics? Two deadly mushrooms, A. pallidorosea and A. subjunquillea, were deep sequenced, and sequences of biosynthetic genes encoding MSDINs (cyclic peptide presursor) and prolyl oligopeptidases (POPA and POPB) were obtained. The two Amanita species yielded 20 and 18 MSDINs, respectively. In addition, …

Modifying The Mineral Profile Of Crickets (Acheta Domesticus) Using A Supplemented Diet, Rhianne Morgan Le Maxwell

Master's Theses

Captive insectivores may consume invertebrates as all, or part of their overall diet. The challenge with feeding captive insectivores involves the limited number of invertebrate species that are commercially available, and the lack of key nutrients provided by these insects. Among these insects, a naturally occurring low concentration of calcium and an inverse calcium to phosphorus ratio may put insectivores at the risk of developing hypocalcemia. A strategy to correct this nutrient imbalance involves supplementing the insect diet with high concentrations of targeted nutrients – a term referred to as gut-loading. Current industry guidelines recommend feeding a supplemented diet for …

Growth Characteristics Of Lactobacillus Wasatchensis And Its Detection And Enumeration Using Quantitative Polymerase Chain Reaction, Isaac Brockbank Bowen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

There are numerous challenges encountered during the manufacturing and storage of cheese by both the large-scale and artesian producers. One such challenge has been the formation of late gassy defect, which occurs when gas is produced by certain lactic acid bacteria found in the cheese block during storage and aging over a three month time period. Negative consequences of late gas production are slits and cracks in the cheese block and puffy cheese packaging, which cause significant financial losses for manufacturers along with poor consumer acceptance.

Lactobacillus wasatchensis is one such lactic acid bacterium shown to produce gas during cheese …

Anti-Inflammatory Effect Of Berry Essences, Inah Gu

Graduate Theses and Dissertations

Inflammation is one of defense reactions of our body tissues against harmful stimuli such as infection and tissue injury. However, it has been reported that chronic inflammation can lead to chronic inflammatory diseases including diabetes, cardiovascular diseases and cancer. This transition from acute to chronic inflammation state is usually induced by pro-inflammatory mediators and cytokines including nitric oxide (NO), prostaglandin E2 (PGE2), interleukin-1β (IL-1β), interleukin-6 (IL-6), and tumor necrosis factor-α (TNF-α), which accelerate the development of other chronic diseases. Accordingly, targeting these pro-inflammatory factors is one of the important roles for anti-inflammatory agents. For last two decades, researches about anti-inflammatory …

Effect Of Grain Sorghum Polyphenols On Fecal Fermentation, Danielle Marie Ashley

Graduate Theses and Dissertations

Obesity is an increasing epidemic which during 2015-2016 afflicted 39.8% of adults and 18.5% of youth in the United States. Not only can obesity affect quality of life, but it can lead to life-threatening diseases such as type 2 diabetes, heart disease, stroke, and some cancers. Animal and human research have demonstrated a pattern of gut microbiota perturbation in overweight and obesity, characterized by a reduction of beneficial bacterial species and increase in harmful species. Diet has been established as a contributing factor in gut ecology, and foods including fiber, resistant starch, and polyphenols have been found to both enhance …

Cilantro/Coriander In The Garden, Dan Drost, Colt Miller

All Current Publications

This fact sheet describes cilantro/coriander in the garden, varieties, how to grow, problems, harvesting and storage, nutrition, and frequently asked questions.

The Effects Of Cold Plasma Treatment On Sweet Basil (Ocimum Basilicum), Sauvelson Auguste

Seton Hall University Dissertations and Theses (ETDs)

The study discussed herein looks both to continue and to expand upon previous work conducted here at Seton Hall University, which investigated the effect of cold plasma processing on sweet basil and their essential oils. It was found that the application of cold plasma treatment increases plant growth and eugenol concentration, which is an essential oil component and one of the potential natural antioxidants used in food preservation. In this study, we considered methods for increasing the production and harvesting of plants that produce essential oils such as sweet basil (Ocimum basilicum). The study also incorporated more controls …

Comparison Of Agricultural Technology At Home And Abroad And China's Coping Strategies, Chen Shibo, Wang Ge, Chen Yaping

Food and Machinery

Compared with the international frontier, the gap in agricultural technology in China is shrinking, and a basic pattern of a small number of leading, majority running and running is formed. In the new era, we should vigorously support the research of basic, cutting-edge and public welfare technologies in agriculture, increase the support of various national science and technology plans to the agricultural sector, accelerate the construction of agricultural IoT technology service platforms, and promote the integration of agricultural technology innovation.

Analysis Of Notifications On China Food Safety By Eu Rapid Alert System For Food And Feed （Rasff） In 2016～2017, Yuan Yanfang, Chen Hui

Food and Machinery

This article analyzes the food safety notifications on China by EU Rapid Alert System for Food and Feed（RASFF）in 2016~2017 from five perspectives: number of notifications, notifying countries, notification types, product categories and hazard categories. It makes a summary on the characteristics of food safety notifications on China by RASFF in 2016~2017, and analyses the key food categories and risk factors focused by European Union. Finally, three suggestions are concluded to improve food safety supervision in China, including establishing a food safety early warning platform based on data analysis; accurately analyzing the characteristics of food safety risks notified by RASFF to …

Effects Of Xylitol And Mannitol On The Structural And Functional Properties Of Peanut Proteins, Zhou Xiangjun, Yang Xuechun, Liu Haiyu, Gao Yixia

Food and Machinery

The changes of solubility, emulsibility, ultraviolet absorption spectroscopy, fluorescence emission spectroscopy and surface hydrophobicity of peanut proteins (PP) were investigated using the methods of 1-naphthalenesulfonicacid-8-(phenylamino)-sodium salt (ANS), ultraviolet and fluorescence spectroscopy. The results showed that, with the increasing of xylitol and mannitol, the solubility of PP increased within pH 3.0～6.0, reached minimum value almost at pH 4.0, while the emulsibility increased first and declined finally. We supposed that the tyrosine was wrapped into the inner core of PP, while the tryptophan exposed to the surface of PP, resulting in the fluorescence intensity of them reduced with the increasing of xylitol …

Separation And Screening Of Lactic Acid Bacteria From The Traditional Yak Yogurt Resistant Against Of Acid And Bile Salts, Li Yang, Zhao Xin, Zhang Yu, Wang Hongwei, Suo Huayi

Food and Machinery

There are abundant lactic acid bacteria resources in traditional yak yoghurt. 48 strains of lactic acid bacteria were isolated and identified from yak yoghurt collected from Qinghai region. Screening of acid-tolerant and bile-resistant salts for 11 strains of lactic acid bacteria that thrive and can be used in foods. The results showed that 6 strains had a survival rate of >50.00% in pH 3.00 artificial gastric fluid, and 2 strains had a growth efficiency of >15% in 0.30% bile salt. Lactobacillus rhamnosus 2016SWU.05.0601 was the best resistant strain. The survival rate in artificial gastric juice is 119.53%, and the growth …

Electronic Nose And Gc-Ms Analysis On Volatile Compounds In Essential Oils From Mandarin （Citrus Reticulata Blanco） Peels, Cao Xuedan, Fang Xiugui, Li Erhu, Xu Jianguo, Zhao Kai

Food and Machinery

The essential oils were extracted from four varieties of Citrus Reticulata peels (Citrus poonensis Hort. ex Tanaka, Citrus unshiu Marc., Citrus suceosa Hort.ex Tanaka and Citrus tardiferax Hort. ex Tanaka）by roll-pressed, and then volatile compounds were analyzed by electronic nose and gas chromatography-mass spectrometry (GC-MS) technology. The results shows that: 5 kinds of the 18 sensors have a significant difference in the response values of the four kinds of Citrus Reticulata Blanco oils (P＜0.05), electronic nose was applied to distinguish the essential oils through the principal component analysis (PCA) and the classification index was above 86%. GC-MS analysis showed there …

Evaluation Of Uncertainty Of Vanillin In Tobacco By Solvent Extraction Direct Injection-Gas Chromatography-Mass Spectrometry/Mass Spectrometry, Li Chao, Xu Yong, Li Exian, Qin Yunhua, Wu Jiacan, Liu Xiuming, Wang Jiajun, Jiang Wei, Zhang Chengming

Food and Machinery

The content of vanillin in tobacco was determined by liquid solvent extraction direct injection -gas chromatography-mass spectrometry (LSE-GC-MS/MS). By calculating the uncertainty component and synthetic uncertainty of vanillin, the influence error on the detection results of vanillin content was achieved. The uncertainty of the measurement result of the substance was 1.37 μg/g.

Experimental Study On Negative Pressure Grading For Peanut, Yin Shuangshuang, Jiang Haiyong, Li Na, Feng Yongfei

Food and Machinery

A peanut negative pressure grading device with simple structure, good grading effect and easy operation was designed based on Laval nozzle structure. Five factors affecting the vacuum degree in negative pressure tube were simulated and the structure size of air duct was determined based on Fluent. CFD-DEM coupled simulation software was used to simulate the negative pressure sorting of two kinds of peanuts with the same volume and small density difference, and the sorting differences of high quality and inferior grade peanuts were obtained. On this basis, taking the sorting height, conveyor belt speed and air inlet speed as experimental …

Design Of Walnut Online Weighing System Based On Support Vector Regression, Jin Zuohui, Zhai Zhiqiang, Zhang Ruoyu, Zou Kunlin, Pang Yujie

Food and Machinery

In order to accurately detect walnut weight online, a walnut weight online testing system based on multi-sensor information fusion was designed, which was adopted the method of dynamic compensation and calibration to process signal collected from an acceleration sensor and symmetrical weight sensors and used the algorithm of support vector regression (SRV) to predict the walnut weight. Then, 400 walnuts were used to acquire weight data at speed of 0.02, 0.03 and 0.05 m/s respectively based on this system. Meanwhile the data were trained and verified. The better prediction model of walnut weight was determined as SVR model with linear …

Effect Of Calcium Ascorbate And Ε-Polylysine Treatment On Preservation And Color-Protection Of Fresh-Cut Sweet Potato, Liu Shuo, Wang Liqun, Zhang Xinyi, Deng Lili, Zeng Kaifang

Food and Machinery

“Erlang Shao” were used to evaluate the effects of calcium ascorbate and ε-polylysine on improving the quality of fresh-cut sweet potato during 4℃ storage. To reveal the mechanism, the browning degree, the total number of colonies, the content of total phenol, as well as the activities of polyphenol oxidase (PPO), peroxidase (POD) and phenylalnine ammonialyase (PAL) of fresh-cut sweet potato were measured. The results indicated that comparing with control, 5% calcium ascorbate + 0.03% epsilon-polylysine could significantly retard the increase of the browning index, the total number of colonies and maintain a higher levels of total phenol content, inhibit the …

Effects Of Addition Of Prunus Mume On The Quality Of Beef Patties During Storage, Luo Ming, Ma Yuan, Yuan Yiping, Luo Yujie, Zhang Guirong, Yin Xiaocui, Xu Yingping

Food and Machinery

Using beef patties without and with 0.02% butylated hydroxytoluene (BHT) as controls, effects on lipid oxidation, protein oxidation, antibacterial activity and quality of beef patties supplemented with 5%, 10%, 15% and 20% Prunus mume (PM) were studied after storage at -18 ℃. The results showed that the beef patties with addition of 10%, 15% and 20% PM decreased TBARS values significantly compared to the control samples（P＜0.05）, and the lipid antioxidation of 20% PM was commensurate with 0.02% BHT during the storage. The TVB-N value of all treated samples reduced significantly after 4 d（P＜0.05）, and the beef patties added 20% PM …

Development On The Alcoholic Drink Mixed With Extracts Of Alpinia Offcinarum And Turmeric Circuma And Its Sensory Quality, Ye Xiaohong, Tang Wenshi, Li Li

Food and Machinery

In order to develop a novel unique flavor healthy alcoholic product, the reflux technology was used to extract effective constituents from the plant materials including Alpinia offcinarum Hance and Turmeric Circuma Longa, respectively, and obtained the alcoholic drink mixed with Alpinia offcinarum and alcoholic drink mixed with Turmeric Ciruma through blending and aging. Then the quality, sensory and volatile aroma components of the 2 products were further analysed. The results indicated that the products meet the demand of standard GB/T 27588—2011, appeared as golden and transparency colour, with evident plant aroma characteristic. Among them, the alcoholic drink mixed with Alpinia …