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https://www.readbyqxmd.com/read/27914331/fabrication-of-%C3%AE-carotene-nanoemulsion-based-delivery-systems-using-dual-channel-microfluidization-physical-and-chemical-stability
#1
Xiang Luo, Yanyan Zhou, Long Bai, Fuguo Liu, Yihui Deng, David Julian McClements
A considerable research effort is focused on developing effective delivery systems for hydrophobic nutraceuticals. β-carotene, a pro-vitamin A carotenoid, requires encapsulation to improve its water dispersibility and chemical stability in foods. In this study, β-carotene was encapsulated in oil-in-water nanoemulsions fabricated using high-pressure dual-channel microfluidization. Two types of natural emulsifier, quillaja saponins (Q-Naturale) and whey protein isolate (WPI), were capable of producing nanoemulsions (d32=0...
November 16, 2016: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/27904396/moisture-sensitivity-optical-mechanical-and-structural-properties-of-whey-protein-based-edible-films-incorporated-with-rapeseed-oil
#2
Sabina Galus, Justyna Kadzińska
The objective of this work is to study the effect of the rapeseed oil content on the physical properties of whey protein emulsion films. For this purpose, whey protein films with the addition of 0, 1, 2 and 3% of rapeseed oil, and glycerol as a plasticizer were obtained by the casting method. Film-forming emulsions were evaluated and compared using light scattering granulometry. The Sauter mean diameters (d32) of lipid droplets in film-forming solutions showed an increasing trend when increasing the oil volume fractions...
March 2016: Food Technology and Biotechnology
https://www.readbyqxmd.com/read/27903833/meal-distribution-of-dietary-protein-and-leucine-influences-long-term-muscle-mass-and-body-composition-in-adult-rats
#3
Layne E Norton, Gabriel J Wilson, Christopher J Moulton, Donald K Layman
BACKGROUND: Protein quantity and quality at a meal affect muscle protein synthesis (MPS); however, long-term effects of protein distribution at individual meals on adult muscle mass remain unknown. OBJECTIVE: We used a precise feeding protocol in adult rats to determine if optimizing postmeal MPS response by modifying the meal distribution of protein, and the amino acid leucine (Leu), would affect muscle mass. METHODS: Two studies were conducted with the use of male Sprague-Dawley rats (∼300 g) trained to consume 3 meals/d, then assigned to diet treatments with identical macronutrient contents (16% of energy from protein, 54% from carbohydrates, and 30% from fat) but differing in protein quality or meal distribution...
November 30, 2016: Journal of Nutrition
https://www.readbyqxmd.com/read/27903518/habituation-to-low-or-high-protein-intake-does-not-modulate-basal-or-postprandial-muscle-protein-synthesis-rates-a-randomized-trial
#4
Stefan Hm Gorissen, Astrid Mh Horstman, Rinske Franssen, Imre Wk Kouw, Benjamin T Wall, Nicholas A Burd, Lisette Cpgm de Groot, Luc Jc van Loon
BACKGROUND: Muscle mass maintenance is largely regulated by basal muscle protein synthesis rates and the ability to increase muscle protein synthesis after protein ingestion. To our knowledge, no previous studies have evaluated the impact of habituation to either low protein intake (LOW PRO) or high protein intake (HIGH PRO) on the postprandial muscle protein synthetic response. OBJECTIVE: We assessed the impact of LOW PRO compared with HIGH PRO on basal and postprandial muscle protein synthesis rates after the ingestion of 25 g whey protein...
November 30, 2016: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/27898877/effects-of-full-fat-or-defatted-rice-bran-on-growth-performance-and-blood-characteristics-of-weanling-pigs
#5
G A Casas, H H Stein
The objective of this experiment was to determine the effect of increased concentrations of full fat rice bran (FFRB) or defatted rice bran (DFRB) in diets without or with supplementation of an exogenous xylanase on growth performance and blood characteristics in weanling pigs. A total of 532 pigs (9.3 ± 0.5 kg initial BW) were allotted to 14 diets in 4 blocks and 8 replicate pens per diet in a randomized complete block design. There were 4 or 5 pigs per pen. A basal diet containing corn, soybean meal, and whey powder and 6 diets containing corn, soybean meal, whey powder, and 10, 20, or 30% FFRB or 10, 20, or 30% DFRB were used...
October 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/27897433/affinity-chromatography-matrices-for-depletion-and-purification-of-casein-glycomacropeptide-from-bovine-whey
#6
María F Baieli, Nicolás Urtasun, María J Martinez, Daniela B Hirsch, Ana M R Pilosof, María V Miranda, Osvaldo Cascone, Federico J Wolman
Casein glycomacropeptide (CMP) is a 64- amino acid peptide found in cheese whey, which is released after κ-casein specific cleavage by chymosin. CMP lacks aromatic amino acids, a characteristic that makes it usable as a nutritional supplement for people with phenylketonuria. CMP consists of two nonglycosylated isoforms (aCMP A and aCMP B) and its different glycosylated forms (gCMP A and gCMP B). The most predominant carbohydrate of gCMP is N-acetylneuraminic acid (sialic acid). Here, we developed a CMP purification process based on the affinity of sialic acid for wheat germ agglutinin (WGA)...
November 7, 2016: Biotechnology Progress
https://www.readbyqxmd.com/read/27896236/the-effect-of-bcaa-and-iso-whey-oral-nutritional-supplements-on-dialysis-adequacy
#7
Effat Afaghi, Ali Tayebi, Abbas Ebadi, Vahid Sobhani, Behzad Einollahi, Mehdi Tayebi
BACKGROUND: Protein-energy malnutrition is a common problem in hemodialysis patients and has different outcomes such as reduced quality of life, longer hospitalization time, lower dialysis adequacy, and higher mortality rate. Investigation of dialysis adequacy is an important method for assessing hemodialysis patients, and improving the dialysis adequacy is an important healthcare team goal. OBJECTIVES: The present study aims to investigate and compare the effects of BCAA and ISO-WHEY oral nutritional supplements on dialysis adequacy...
November 2016: Nephro-urology Monthly
https://www.readbyqxmd.com/read/27889150/antimicrobial-activity-of-whey-protein-films-supplemented-with-lactobacillus-sakei-cell-free-supernatant-on-fresh-beef
#8
Silvia Del Carmen Beristain-Bauza, Emma Mani-López, Enrique Palou, Aurelio López-Malo
The aim of this work was to evaluate the antimicrobial activity of whey protein isolate (WPI) films supplemented with Lactobacillus sakei NRRL B-1917 cell-free supernatant on beef inoculated with Escherichia coli ATCC 25922 or Listeria monocytogenes Scott A; additionally, sensory evaluation was performed on wrapped beef cubes. Supernatant concentrates were obtained from Lb. sakei cultures in MRS broth after centrifugation, filtering, and freeze-drying. Films were prepared with WPI (3% w/w), alginate (0.625% w/w), rehydrated supernatant (18 mg/ml), and glycerol...
April 2017: Food Microbiology
https://www.readbyqxmd.com/read/27889129/biofouling-of-ultrafiltration-membrane-by-dairy-fluids-characterization-of-pioneer-colonizer-bacteria-using-a-dna-metabarcoding-approach
#9
Julien Chamberland, Marie-Hélène Lessard, Alain Doyen, Steve Labrie, Yves Pouliot
Biofouling of filtration membranes is a major quality and performance issue for the dairy industry. Because biofilms that survive cleaning cycles become resistant over time, prevention strategies limiting the adhesion of bacteria to membranes should be prioritized for sustainable control of biofouling. However, this cannot be achieved because the pioneer bacteria colonizing these membranes are still unknown. Consequently, the objective of this study was to characterize pioneer bacteria on the filtration membrane surface and to measure the effect of filtration operational parameters on their diversity...
November 23, 2016: Journal of Dairy Science
https://www.readbyqxmd.com/read/27885532/whey-protein-supplementation-enhances-body-fat-and-weight-loss-in-women-long-after-bariatric-surgery-a-randomized-controlled-trial
#10
Daniela Lopes Gomes, Milene Moehlecke, Fernanda Bassan Lopes da Silva, Eliane Said Dutra, Beatriz D'Agord Schaan, Kenia Mara Baiocchi de Carvalho
BACKGROUND: The ideal nutritional approach for weight regain after bariatric surgery remains unclear. OBJECTIVE: The objective of this study is to assess the effect of whey protein supplementation on weight loss and body composition of women who regained weight 24 or more months after bariatric surgery. METHODS: This is a 16-week open-label, parallel-group, randomized controlled trial of women who regained at least 5 % of their lowest postoperative weight after a Roux-en-Y gastric bypass (RYGB)...
November 24, 2016: Obesity Surgery
https://www.readbyqxmd.com/read/27885320/from-by-product-to-valuable-components-efficient-enzymatic-conversion-of-lactose-in-whey-using-%C3%AE-galactosidase-from-streptococcus-thermophilus
#11
Barbara Geiger, Hoang-Minh Nguyen, Stefanie Wenig, Hoang Anh Nguyen, Cindy Lorenz, Roman Kittl, Geir Mathiesen, Vincent G H Eijsink, Dietmar Haltrich, Thu-Ha Nguyen
β-Galactosidase from Streptococcus thermophilus was overexpressed in a food-grade organism, Lactobacillus plantarum WCFS1. Laboratory cultivations yielded 11,000 U of β-galactosidase activity per liter of culture corresponding to approximately 170 mg of enzyme. Crude cell-free enzyme extracts obtained by cell disruption and subsequent removal of cell debris showed high stability and were used for conversion of lactose in whey permeate. The enzyme showed high transgalactosylation activity. When using an initial concentration of whey permeate corresponding to 205 g L(-1) lactose, the maximum yield of galacto-oligosaccharides (GOS) obtained at 50°C reached approximately 50% of total sugar at 90% lactose conversion, meaning that efficient valorization of the whey lactose was obtained...
December 15, 2016: Biochemical Engineering Journal
https://www.readbyqxmd.com/read/27878590/use-of-saline-waste-water-from-demineralization-of-cheese-whey-for-cultivation-of-schizochytrium-limacinum-pa-968-and-japonochytrium-marinum-an-4
#12
Tomas Humhal, Petr Kastanek, Zuzana Jezkova, Anna Cadkova, Jana Kohoutkova, Tomas Branyik
Saline waste water from demineralization of cheese whey was used as the main component of waste saline medium (WSM) for cultivation of thraustochytrids. The suitability of WSM for cultivation of Schizochytrium limacinum PA-968 and Japonochytrium marinum AN-4 was evaluated by comparison with cultivation on nutrient medium (NM) in shake flask and fermenter cultures. Biomass productivities achieved in WSM for the thraustochytrids were comparable with those in NM for both shake flask and fermenter cultures. The maximum total lipid content (56...
November 23, 2016: Bioprocess and Biosystems Engineering
https://www.readbyqxmd.com/read/27875638/sensory-quality-preservation-of-coated-walnuts
#13
Antonella L Grosso, Claudia M Asensio, Nelson R Grosso, Valeria Nepote
The objective of this study was to evaluate the sensory stability of coated walnuts during storage. Four walnut samples were prepared: uncoated (NC), and samples coated with carboxymethyl cellulose (NCMC), methyl cellulose (NMC), or whey protein (NPS). The samples were stored at room temperature for 210 d and were periodically removed from storage to perform a sensory descriptive analysis. A consumer acceptance test was carried out on the fresh product (storage day 0) to evaluate flavor. All samples exhibited significant differences in their sensory attributes initially and after storage...
November 22, 2016: Journal of Food Science
https://www.readbyqxmd.com/read/27866187/a-pilot-study-examining-the-effects-of-8-week-whey-protein-versus-whey-protein-plus-creatine-supplementation-on-body-composition-and-performance-variables-in-resistance-trained-women
#14
Colin D Wilborn, Jordan J Outlaw, Petey W Mumford, Stacie L Urbina, Sara Hayward, Michael D Roberts, Lem W Taylor, Cliffa A Foster
AIMS: We performed a pilot study examining the effects of whey protein and creatine supplementation (PRO + CRE group) versus whey protein supplementation (PRO group) alone on body composition and performance variables in a limited number of resistance-trained women. METHODS: Seventeen resistance-trained women (21 ± 3 years, 64.7 ± 8.2 kg, 23.5 kg/m2, 26.6 ± 4.8% body fat, >6 months of training) performed a 4-day per week split-body resistance training program for 8 weeks...
November 19, 2016: Annals of Nutrition & Metabolism
https://www.readbyqxmd.com/read/27865507/plasma-protein-and-supplemental-isoleucine-in-milk-replacers-for-dairy-calves
#15
K M Vasquez, S Y Morrison, J M Campbell, J K Drackley
We measured the effects of milk replacers containing 0, 33, 66, or 100% of the total replaceable whey protein as bovine plasma protein (PP), without or with Ile supplementation, on the intake, growth, and health of 124 male Holstein calves for 35 d. Milk replacers were formulated to contain 18% crude protein and 20% fat, with contents of Lys and Met equalized. When fed to calves at 1.5% of body weight (dry matter basis) under thermoneutral conditions, diets were predicted to allow average daily gains of 0.55 kg/d based on metabolizable energy or 0...
November 16, 2016: Journal of Dairy Science
https://www.readbyqxmd.com/read/27865349/whey-protein-increases-muscle-weight-gain-through-inhibition-of-oxidative-effects-induced-by-resistance-exercise-in-rats
#16
Kely R Teixeira, Marcelo E Silva, Wanderson G de Lima, Maria L Pedrosa, Fabiano K Haraguchi
Whey protein (WP) is known for its nutritional value and antioxidant properties. The aim of this study was to evaluate whether the antioxidant properties of WP could contribute to muscle weight gain in response to resistance exercise (RE). We hypothesized that WP ingestion could increase muscle weight gain in rats subjected to an RE program, through inhibition of oxidative effects induced by high-intensity RE. Thirty-two male Fischer rats were randomly assigned to control sedentary, control exercised, WP sedentary, and WP exercised groups (n=8/group)...
October 2016: Nutrition Research
https://www.readbyqxmd.com/read/27863345/suppression-of-tnf-%C3%AE-and-free-radicals-reduces-systematic-inflammatory-and-metabolic-disorders-radioprotective-effects-of-ginseng-oligopeptides-on-intestinal-barrier-function-and-antioxidant-defense
#17
Li-Xia He, Jun-Bo Wang, Bin Sun, Jian Zhao, Lin Li, Teng Xu, Hui Li, Jing-Qin Sun, Jinwei Ren, Rui Liu, Qi-He Chen, Zhao-Feng Zhang, Yong Li
Irradiation therapy is markedly associated with intestinal injure and oxidant stress. This study aimed to investigate the effects of ginseng (Panax ginseng C.A. Mey.) oligopeptides (GOP) on irradiation-induced intestinal injury and antioxidant defense in mice. BALB/c mice (8 weeks old) were randomly divided into six groups: vehicle control, irradiation control (IR), IR+whey protein [0.30 g/kg body weight (BW)], IR+GOP 0.15 g/kg BW, IR+GOP 0.30 g/kg BW and IR+GOP 0.60 g/kg BW. Postirradiation 30-day survival trial, white blood cells count and bone marrow hematopoietic system damage were performed to identify the injury degree induced by irradiation...
October 26, 2016: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/27857195/synthesis-of-3r-acetoin-and-2-3-butanediol-isomers-by-metabolically-engineered-lactococcus-lactis
#18
Vijayalakshmi Kandasamy, Jianming Liu, Shruti Harnal Dantoft, Christian Solem, Peter Ruhdal Jensen
The potential that lies in harnessing the chemical synthesis capabilities inherent in living organisms is immense. Here we demonstrate how the biosynthetic machinery of Lactococcus lactis, can be diverted to make (3R)-acetoin and the derived 2,3-butanediol isomers meso-(2,3)-butanediol (m-BDO) and (2R,3R)-butanediol (R-BDO). Efficient production of (3R)-acetoin was accomplished using a strain where the competing lactate, acetate and ethanol forming pathways had been blocked. By introducing different alcohol dehydrogenases into this strain, either EcBDH from Enterobacter cloacae or SadB from Achromobacter xylosooxidans, it was possible to achieve high-yield production of m-BDO or R-BDO respectively...
November 18, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27855902/some-instrumental-methods-applied-in-food-chemistry-to-characterise-lactulose-and-lactobionic-acid
#19
Radla Zabian Bassetto Bisinella, Jéssica Caroline Bigaski Ribeiro, Cristina Soltovski de Oliveira, Tiago André Denck Colman, Egon Schnitzler, Maria Lúcia Masson
Lactose is obtained as a by-product from whey. It is a source of several derivatives, including lactulose and lactobionic acid. These two compounds were analysed by using the following techniques: thermogravimetry/derivative thermogravimetry (TG/DTG), differential scanning calorimetry coupled with optical microscope (DSC-thermomicroscopy), infrared spectroscopy (FTIR) and X-ray diffractometry (XRD). The DSC technique coupled with microscopy made it possible to observe that the lactobionic acid showed several thermal events upon decomposition, which occurred at temperatures higher than 50°C...
April 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27855881/designing-dairy-desserts-for-weight-management-structure-physical-properties-and-in-vitro-gastric-digestion
#20
Jennifer Borreani, Empar Llorca, Amparo Quiles, Isabel Hernando
The first aim of this study was to observe the effect of adding dairy proteins and reducing the cream content in order to obtain healthier dairy desserts for use in weight management. The extra-whey protein low-cream sample had the densest, firmest matrix, which is related to increased satiety. The second aim was to investigate the in vitro gastric digestion behavior of whey and casein proteins in a heat-treated semisolid real food. The extra-casein protein sample matrix broke down more slowly than the others because the caseins clotted at the gastric pH...
April 1, 2017: Food Chemistry
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