Digital Commons Network^™

Preparation Of Iron-Chelating Peptides From Zanthoxylum Bungeanum Seed Protein Using Enzymatic Hydrolysis, Yuan Hong, Chai Liqin, Quan Li, Wang Lixia, Tian Chengrui, Wang Xiaoyu

Food and Machinery

Zanthoxylum bungeanum seed protein was hydrolyzed with different proteases, and the optimal protease was screened based on the hydrolysis degree and iron-chelating ability of hydrolysates, then iron-chelating peptides were prepared by the optimal protease. Single factor method and response surface methodology based on Box-Behnken design using four factors and three levels were carried out to optimize the conditions of Zanthoxylum bungeanum seed iron-chelating peptide, and the effects, including substrate concentration, enzyme/substrate ratio, hydrolysis pH, temperature, time on iron-chelating ability of hydrolysate were studied. The results indicated alcalase proteases was the optimal protease to prepare iron-chelating peptides from Zanthoxylum bungeanum seed …

Effect Of The Cassava Flour On The Qualities And Texture Characteristics Of Cake, Wan Gying, Li Mingjuan, Zhang Yayuan, You Xiangrong, Sun Jian, Wei Ping, Zhou Kui

Food and Machinery

The paper focused on the effect of the cassava flour on the physical properties, sensory qualities and texture characteristics of cake. Different proportion of cassava flour instead of low-gluten flour was used to make cake, and the qualities and texture indexes of the products were evaluated. The results showed that with increase of the cassava flour, retraction rate of cake first decreased then increased. However, the sensory score of cake was found first increased then decreased. The baking loss rate, density, hardness and chewiness of cake increased, and the specific volume, moisture content, springiness and cohesiveness of cake was reduced. …

The Effects On Phesicalchemical Properties And Surface Temperature Change Of Cut Tobacco During Convection Drying, Duan Kun, Zhao Yongzhen, Lu Changtong, Chen Liangyuan, Wu Wentao, Zhao Zhiwei, Wang Hongwei, Zheng Fengyang, Li Longfei, Zhu Wenkui

Food and Machinery

Moisture content and temperature variation of cut tobacco during convective drying were detected with the different hot air temperature from 70 ℃ to 120 ℃. The heat and mass transfer model for the variation of cut tobacco surface temperature with moisture content was established, and the characteristic temperature was proposed to characterize the heating degree of cut tobacco in the drying process. Then the correlation between the physicochemical properties of cut tobacco and the characteristic temperature was analyzed after the end of drying (12.5% moisture content of wet base). The results were present as follows: ① Heat and mass transfer …

Advances On Bioactivity And Separating Methods Of Pitaya Fruit Pigment, Duan Xiaoyan, Tian Yan, Deng Fangming

Food and Machinery

This paper describes the main components and basic physical properties of the pigment of pitaya fruit， summarizes the extraction technology and purification technology at home and abroad. Gives a comprehensive introduction to the bioactivity of the pitaya fruit and analyzes the problems exist in the research of the pigment as well as the application of the pitaya fruit pigment in daily life.

Hedonic Pricing Of Chocolate Quality Characteristics: Is There A Difference For Fruit Or Nut Chocolate?, Willie B. Bedell, Michael R. Reed

Agricultural Economics Presentations

Chocolate campaigns in the United States have focused on the production of premier quality and healthy blend chocolate bars. We expect that merchandising efforts will offer a higher price for fruit or nut blend chocolates. Using online retail data from Amazon, eBay, and Walmart, we applied the hedonic function to estimate retailers offer price for a blended bar. The findings show that online retailers have mixed offer prices for a blend or plain bar. The paper suggests that studies would learn much more from a data and analysis that control for quantity sold and time effects in the chocolate market.

Symptoms And Causes Of Foamy Bloat In Cattle, Zachary Christman

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

The bovine stomach normally produces gases such as ammonia, carbon dioxide and methane. However when these gases become trapped in the bovine stomach because of a thick, frothy or foamy liquid it is called bloat. Cattle bloat is a very old condition and goes by many names but is primarily trapped gas within the bovine stomach. Readily digested feedstuff such as highly processed grain diets or an overabundance of fresh immature alfalfa often leads to a vast amount of small particles and carbohydrates in the rumen; this is the major cause of foamy bloat. Severe bloat causes death by suffocation …

The Future Of Food In Blade Runner 2049, Diarmuid Cawley

Other resources

The science fiction genre has always been a hotbed for questions about the existence of life and what it means to be human. Food, like water and oxygen, is necessary to sustain life, but also is a key indicator of culture. One of the things that fascinates us about science fiction is how an imagined future culture might look. Blade Runner 2049, although not centred around food, interweaves food and agriculture into a dystopian narrative on evolution and a bio-engineered labour force, while asking us what it means to have memories and to be human.

Trophic Roles Of Tadpoles In Tropical Australian Streams, Katrin Schmidt, Melanie L. Blanchette, Richard G. Pearson, Ross A. Alford, Aaron M. Davis

Research outputs 2014 to 2021

Tadpoles can be abundant consumers in stream ecosystems, and may influence the structure and function of streams through their feeding activities and interactions with other organisms. To understand the contribution of tadpoles to stream functioning, and the potential impact of their loss, it is necessary to determine their diets and how they might influence food-web structure. Using gut-content analysis and stable-isotope analysis of N and C, we determined the main food sources and trophic positions of tadpoles of five native frog species, invertebrates, and fish in upland and lowland Australian Wet Tropics streams. Omnivory was prevalent among the tadpoles and …

Estimation Of Irrigation Requirements For Drip-Irrigated Maize In A Sub-Humid Climate, Liu Yang, Hai-Shun Yang, Jiu-Sheng Li, Yan-Feng Li, Hai-Jun Yan

Department of Agronomy and Horticulture: Faculty Publications

Drip-irrigation is increasingly applied in maize (Zea mays L.) production in sub-humid region. It is critical to quantify irrigation requirements during different growth stages under diverse climatic conditions. In this study, the Hybrid-Maize model was calibrated and applied in a sub-humid Heilongjiang Province in Northeast China to estimate irrigation requirements for drip irrigated maize during different crop physiological development stages and under diverse agro-climatic conditions. Using dimensionless scales, the whole growing season of maize was divided into diverse development stages from planting to maturity. Drip-irrigation dates and irrigation amounts in each irrigation event were simulated and summarized in 30-year simulation …

Identifying Ecologically Relevant Scales Of Habitat Selection: Diel Habitat Selection In Elk, Caleb P. Roberts, James W. Cain Iii, Robert D. Cox

Department of Agronomy and Horticulture: Faculty Publications

Although organisms make resource selection decisions at multiple spatiotemporal scales, not all scales are ecologically relevant to any given organism. Ecological patterns and rhythms such as behavioral and climatic patterns may provide a consistent method for identifying ecologically relevant scales of habitat selection. Using elk (Cervus canadensis) as an example species, we sought to test the ability of behavioral patterns to empirically partition diel scales for modeling habitat selection. We used model selection to partition diel scales by shifts in dominant behavior and then used resource selection probability functions to model elk habitat selection hierarchically at diel scales within seasons. …

Livestock Production And Health, Christopher Gustafson

Cornhusker Economics

As in Nebraska and other cattle-producing states, livestock are an important source of income for hundreds of millions of people living in developing countries. However, for livestock keepers in developing countries, animals are often central to multiple dimensions of the family’s existence, providing—in addition to income—important sources of energy-dense, nutrient-rich animal source foods, generating cultural status, including playing a role in family formation through wedding dowries, and serving, for some, as the household’s primary store of wealth. Livestock play all of these roles in pastoralist—semi-nomadic livestock-keeping—communi-ties. While in the past pastoralism was a relatively common way of life throughout the …

What’S Food Got To Do With It?: The Host Mother’S Role In The Cultural Education Of Students Studying Abroad In The Rabat Medina, Isabel Bonhomme

Independent Study Project (ISP) Collection

The dynamic between studentsstudying abroad and the host families with whom they stay is significant to both the study abroad experience and the way people in receiving countries view those fromthe West. Through my research, my goal was to explore and reachafundamental comprehension of this global dynamic from the Moroccan perspective.Specifically, the purpose of this study is to gain a deeper understanding of the process of cultural exchange and absorption which occurs through the use of food. I draw conclusions from information attained through formal interviews of mothers who host American students studying abroad in Rabat, and supplement this with …

Gamma Sigma Delta, Nebraska Chapter Newsletter, Issue #55 Fall 2017

Gamma Sigma Delta, Nebraska Chapter: Newsletters

The Nebraska Chapter was selected as a Gold Chapter for the second consecutive year. The Gold Chapter Achievement Award is selected based on the annual chapter report. A maximum of five chapters may receive the award each year.

President’s Message, Dann Husmann

2017 Gamma Sigma Delta International Foundation Undergraduate Scholarship - Alissa Martindale

2017 John Riley Gamma Sigma Delta Service Scholarship - Andrea Gurney

In Memoriam: Albert “Dale” Flowerday, 89; Michael G. Boosalis, 99; Loyd Karl Fischer, 97

NOMINATIONS FOR GAMMA SIGMA DELTA – Due November 17, 2017

Award of Merit Nomination

Extension Award Nomination

Research Award Nomination

Teaching Award …

Louisiana Agriculture Fall, 2017, Lsu Agcenter

Louisiana Agriculture

No abstract provided.

Nebline, October 2017

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Feature: Floodwater and Stormwater Can Contaminate Water Wells

Food & Health

Farm & Acreage

Pests & Wildlife

Horticulture

Early Childhood

4-H & Youth

and other extension news and events

Piscataquis County Community Food Resources, Samantha Machado

Piscataquis

Food resources found in Piscataquis County, Maine:

• Local farmers' markets
• Local farmers' markets (SNAP, WIC, and/or EBT)
• Free meals through the month (churches)

Somerset County Community Food Resources, Michela Desjardins

Somerset

Food resources found in Somerset County, Maine

• County statistics
• Local producers
• Local markets
• University of Maine (UMO)
• Recreation

Washington County Community Food Resources, Richard Sawyer

Washington

Food resources found in Washington County, Maine:

• Facts about food insecurity
• Snap and WIC
• WIC certified stores
• Farmers' markets
• Harvest Bucks
• Food pantries
• Resources for children

Effects Of Nitrogen And Phosphorus Fertilizer And Topsoil Amendment On Native Plant Cover In Roadside Revegetation Projects, Heidi L. Hillhouse, Walter H. Schacht, Jonathan M. Soper, Carol E. Wienhold

Department of Agronomy and Horticulture: Faculty Publications

Establishing vegetation on roadsides following construction can be challenging, especially for relatively slow growing native species. Topsoil is generally removed during construction, and the surface soil following construction (“cut-slope soils”) is often compacted and low in nutrients, providing poor growing conditions for vegetation. Nebraska Department of Transportation (NDOT) protocols have historically called for nitrogen (N) and phosphorus (P) fertilization when planting roadside vegetation following construction, but these recommendations were developed for cool-season grass plantings and most current plantings use slower-establishing, native warmseason grasses that may benefit less than expected from current planting protocols. We evaluated the effects of nitrogen and …

Understanding The Contributions Of Beef Cattle To Greenhouse Gas Emissions, Elizabeth Stewart, Eric Thacker, Matthew D. Garcia, Juan J. Villalba

All Current Publications

This fact sheet describes current and projected beef consumption, methane, nitrogen, beef cattle production, and possibilities for more sustainable beef production.

Use Of Gene Editing In Usda Research, Mark R. Mclellan, Patsy Brannon, Adriana Campa, Carrie Castille, Steven Daley-Laursen, Roch Gaussoin, Govind Kannan, Mark Lawrence, Dawn Thilmany

Biology Faculty Publications and Presentations

The Science Advisory Council was established in FY2016 as a subcommittee of the National Agricultural Research, Extension, Education, and Economics (NAREEE) Advisory Board by the Chief Scientist as a result of recommendations from the 2012 report on Agricultural Preparedness by the President’s Council of Advisors on Science and Technology. The Council's charge is to provide advice and guidance, on a scientific basis, on the overall strength, practicality, and direction of agricultural research, including emerging technology and scientific issues and report any findings publicly to the NAREEE Advisory Board.

The USDA Chief Scientist first asked the Council to examine rigor and …

Study On Antioxidation Stability Of Collagen Peptides Prepared From Swimming Bladders, Zheng Tingting, Tu Zongcai, Tang Pingping, Zhang Lu, Sha Xiaomei, Wang Hui

Food and Machinery

The change of scavenging activity on DPPH radical, hydroxyl free radical, and reducing power capacity was selected as the index to investigate the effects of pH, temperature, sucrose, preservatives, metal ions and gastrointestinal digestion in vitro on the antioxidant stability of collagen peptides from swimming bladders. The results showed that collagen peptides from swimming bladders kept high activity in acidity environment but lose it in alkaline condition; however, the strong heat-resistance was found; sucrose, NaCl and preservatives (sodium Benzoate and Sodium sorbate) had little effects on its antioxidation stability, but high levels of salt made it lost antioxidation stability partially. …

The Effects Of Different Processing Methods On Expected Glycemic Index Of Cereals And Legumes, Cui Yanan, Zhang Hui, Wang Li, Qian Haifeng, Qi Xiguang

Food and Machinery

The effects of different processing methods (steaming, extruding and roller-drying) on eGI of adlay, oat, rye, colored kidney bean and chickpea were investigated. The results showed that the eGI of steamed samples were in the following order: rye＞adlay＞oat＞ colored kidney bean＞chickpea. The eGI of extruded samples were in the following order: adlay＞rye＞oat＞colored kidney bean＞chickpea. The eGI of roller-dried samples were in the following order:adlay＞rye＞oat＞colored kidney bean＞chickpea. By different processing methods, the eGI of oat, colored kidney bean and chickpea were lower among five samples. The eGI of the same kind of cereal or legume after streaming, extruding and roller-drying were …

Composition And Positional Distribution Of Fatty Acids In Triacylglycerols Of Three Marine Fish Oils, Zhang Huijun, Wang Xingguo, Jin Qinzhe

Food and Machinery

In this study, the purified triacylglycerols (TAG) of selected marine fish oils (anchovy, tuna and salmon oils) were subjected to stereospecific hydrolysis by an sn-1, 3-specific lipase (Lipozyme RM IM) which cleaves selectively the sn-1 and sn-3 position ester bonds of TAG yielding to sn-2-monoglycerides (2-MAG). After lipase hydrolysis, the released free fatty acids and sn-2-MAG were isolated by thin-layer chromatography (TLC). The original TAG and sn-2-MAG were respectively converted to fatty acid methyl esters (FAME), then analyzed by gas chromatography(GC). Results showed that TAG of these marine fish oils were made up of unsaturated fatty acids mainly accounting for …

Detect The Content Of Polar Components In Frying Oils By Preparative Flash Chromatography, Xue Bin, Cao Wenming, Yin Yujie

Food and Machinery

A fast method of separating and detecting the polar compounds in frying oils by preparative FLASH chromatography was established in this study. Applying the EOPC type medium pressure liquid preparative chromatography system as hardware platform and EOPC-specified FLASH column as separation & preparation column, petroleum etherdiethyl ether(8713) as elution solvent, 25 min/min as flow speed, we found polar components(PCs) and non-polar components(non-PCs) in frying oils could be separated properly when elution time of non-PCs was 11min. Separation speed was fast, as the time took by preparative FLASH chromatography was only 41 min, repeatability RSDs of preparative FLASH chromatography were no …

Optimization Of Freeze-Drying Protectantfor Lactobacillus Plantarum Yi-Y 2013, Fan Zhennan, Tong Litao, Zhou Sumei, Yi Cuiping

Food and Machinery

In order to prepare fresh rice noodle through starter, the survival rate of L. plantarum YI-Y 2013 isolated from natural fermentation liquid was used as target. 3 kinds of protective agent through single factor experiment and Plackett-Burman test were screened, i.e., sorbitol, maltodextrin and glycerin. Moreover, the response surface analysis and fit the regression equations were carried out, and the results indicated that the best protection formula was: sorbitol 1.1 g / 100 g, maltodextrin 24.8 g / 100 g, and glycerol 2.4 g / 100 g. The bacteria survival rate was found arriving to (76.08±2.68)%, close to the prediction …

Study On The Antioxidant And Whitening Effect Of Rose Fermented Broth, Zhao Dan, Cao Yufeng, Ding Wenyu, Wang Changtao, Shi Doudou, Yu Dan, Zhang Jiachan, Li Meng

Food and Machinery

To evaluate the antioxidant, whitening effect and skin safety of rose fermented broth. Method: Rose fermented broth was acquired by fermenting saccharomyces cerevisiae with rose. The skin safety, antioxidant effect and whitening effect were evaluated. The human whole gene expression profile chip was used to explore the whitening mechanism of rose fermented broth. The results showed that the scavenging effect of rose fermented broth on DPPH radical scavenging was obvious and its inhibitory effect on the activity of extracellular tyrosinase was in direct proportional to the concentration. The intracellular tests showed that rose broth had inhibitory effect on tyrosinase activity …

Extraction Optimization Of Enzyme Hydrolysis Method And Gc-Ms Analysis On Oleoresin From Zanthoxylum, Chai Liqin, Yuan Hong, Wang Lixia, Lu Yuehong, Tian Chengrui

Food and Machinery

Zanthoxylum was used as the material. Combined cellulase hydrolysis with response surface method to optimize the Zanthoxylum oleoresin (Z瘙簚oleoresin) extraction process. Results showed that the optimum extraction conditions of Z瘙簚oleoresin as follows: 50% ethanol as extractant, cellulase dosage was 62.3 mg/L, enzymolysis time was 2.3 h, enzymolysis temperature was 50 ℃, liquid ratio was 47.41(mL/g). In this condition, the extraction efficiency of Z瘙簚oleoresin was 37.22%. A total of 47 compounds were identified by gas chromatography-mass spectrometry (GC-MS). Main ingredients were D-limonene, linalool, lauricacid, limonene glycol, alpha-terpineol, ascaridole, citronellyl myristate, xanthoxylin, etc.

Effects Of Water-Unextractable Arabinoxylans On The Qualities Of Traditional Chinese Youtiao, Wang Weishi, Zhang Junhui, Li Ling, Fan Mingcong, Wang Li, Qian Haifeng, Li Yan, Zhang Hui, Qi Xiguang

Food and Machinery

The effects of water-unextractable arabinoxylans (WUAX) on the properties of the dough and the final qualities of traditional Chinese Youtiao were investigated. For Youtiao mixed powder, the water holding capacity had been improved, the change of gelatinization temperature was not significant and peak viscosity fell from 2,222.67 to 2,053.00 mPa·s. The farinographic properties of Youtiao dough was slightly affected by extra WUAX, except that the water absorption increased from 56.77% to 64.93%. The extensographic properties varied complexly at different proofing time. The SEM microstructure of dough showed that the uniform starch granule structure could not be formed in youtiao dough …

The Influence Of Thermal Treatment On Grass Carp Quality And Volatile Flavor Compounds, Chen Hui, Liu Yan, Li Zhipeng, Huang Lihui

Food and Machinery

The changes of quality, protein composition and volatile flavor compounds of grass carp were studied at 60, 70, 80, 90 and 100 ℃, shape, texture, nutritional value and flavor were set as the evaluation indexes. The results showed that the weight loss rate of fish increased with the treatment temperature, and the L^* value of fish increased, but the a^* value decreased. The hardness, cohesion, amino acid content, E/N ratio showed an upward trend. 87 types of volatile compounds were detected by SPME-GC-MS, including 24 kinds of alkanes, 19 kinds of aldehydes, 14 kinds of acids, 12 kinds …