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https://www.readbyqxmd.com/read/29236034/gastric-emptying-and-gastrointestinal-transit-compared-among-native-and-hydrolyzed-whey-and-casein-milk-proteins-in-an-aged-rat-model
#1
Julie E Dalziel, Wayne Young, Catherine M McKenzie, Neill W Haggarty, Nicole C Roy
Little is known about how milk proteins affect gastrointestinal (GI) transit, particularly for the elderly, in whom digestion has been observed to be slowed. We tested the hypothesis that GI transit is faster for whey than for casein and that this effect is accentuated with hydrolysates, similar to soy. Adult male rats (18 months old) were fed native whey or casein, hydrolyzed whey (WPH) or casein (CPH), hydrolyzed blend (HB; 60% whey:40% casein), or hydrolyzed soy for 14 days then treated with loperamide, prucalopride, or vehicle-control for 7 days...
December 13, 2017: Nutrients
https://www.readbyqxmd.com/read/29230345/new-trends-for-the-evaluation-of-heat-treatments-of-milk
#2
REVIEW
Mena Ritota, Maria Gabriella Di Costanzo, Maria Mattera, Pamela Manzi
Milk is generally very rich in nutrients and this may lead it to be an ideal growth environment for many microorganisms, including pathogens, so effective measurements aiming to ensure total microbiological safety of milk and minimize the risk to human health are needed. Milk heat treatments are the most common practices carried out to inhibit the microbial growth; therefore it is necessary to have analytical procedures that are more and more up-to-date and capable of detecting the effectiveness of the heat treatments...
2017: Journal of Analytical Methods in Chemistry
https://www.readbyqxmd.com/read/29225316/milk-basic-protein-facilitates-increased-bone-mass-in-growing-mice
#3
Aiko Ono-Ohmachi, Yuko Ishida, Yoshikazu Morita, Ken Kato, Takayuki Y Nara
Milk basic protein (MBP) comprises a group of basic whey proteins and is effective in preventing bone loss by promoting bone deposition (bone formation) and suppressing withdrawn (bone resorption). We previously revealed the bone protective effects of MBP during life phases involving excessive bone resorption, such as in adults and postmenopausal women, and in animal models (ovariectomized rats and mice). However, it was unclear whether MBP increases bone mass during the growth stage, when there is more bone formation than resorption...
2017: Journal of Nutritional Science and Vitaminology
https://www.readbyqxmd.com/read/29224193/screening-of-yeasts-for-the-production-of-2-phenylethanol-rose-aroma-in-organic-waste-based-media
#4
Chreptowicz Karolina, Sternicka Magdalena Katarzyna, Kowalska Patrycja Daria, Mierzejewska Jolanta
In the present study, we isolated twenty eight yeast strains from samples of plant material and fermented food and evaluated the possibility of efficient production of 2-phenylethanol (2-PE) in the organic waste-based media supplemented with L-phenylalanine (L-Phe). We used whey, a by-product from milk processing, as a base for media and either glucose or three by-products from sugar-beet processing as a fermentable carbon source. Ten newly isolated yeast strains were capable of producing over 2 g l-1 2-PE through the L-Phe biotransformation in a batch-mode in standard medium...
December 9, 2017: Letters in Applied Microbiology
https://www.readbyqxmd.com/read/29223901/thermally-enhanced-in-situ-bioremediation-of-groundwater-contaminated-with-chlorinated-solvents-a-field-test
#5
Jan Němeček, Jana Steinová, Roman Špánek, Tomáš Pluhař, Petr Pokorný, Petra Najmanová, Vladislav Knytl, Miroslav Černík
In situ bioremediation (ISB) using reductive dechlorination is a widely accepted but relatively slow approach compared to other technologies for the treatment of groundwater contaminated by chlorinated ethenes (CVOCs). Due to the known positive kinetic effect on microbial metabolism, thermal enhancement may be a viable means of accelerating ISB. We tested thermally enhanced ISB in aquifers situated in sandy saprolite and underlying fractured granite. The system comprised pumping, heating and subsequent injection of contaminated groundwater aiming at an aquifer temperature of 20-30°C...
December 7, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29222900/comparisons-of-proteomic-profiles-of-whey-protein-between-donor-human-milk-collected-earlier-than-3-months-and-6-months-after-delivery
#6
Won-Ho Hahn, Joon-Hwan Song, Jong-Bok Seo, Jung Eun Lee, Jeong-Sang Lee, Seunghyun Song, Joohyun Lee, Nam Mi Kang
BACKGROUND AND OBJECTIVES: Human milk has nutritional, protective, and developmental advantages for premature infants. However, proteomic information of low abundant protein of donor milk is insufficient. The purpose of this study is to analyze and compare the proteome of low abundant protein of donor milk obtained at different postpartum ages other than the colostrum. METHODS AND STUDY DESIGN: Donor breast milk from 12 healthy mothers was collected 15 days, 2 months and 6 months after delivery and stored by medically approved methods...
2018: Asia Pacific Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/29221569/functional-analysis-of-the-igf-system-in-milk
#7
REVIEW
Andreas Hoeflich, Zianka Meyer
The development of milk during evolution is considered a more recent step to provide the neonate with adequate amounts of energy, nutrients, and specific hormonal signals thereby, granting a fast and efficient rate of postnatal growth and development. Since the insulin- or the insulin-like growth factor (IGF) systems were evolved much earlier, it can be assumed that the functionality of the IGF-system has been integrated into the novel matrix milk containing casein and whey proteins from the beginnings. In fact, IGFs and IGF-binding proteins (IGFBPs) are abundantly present in milk, which is particularly true for fore-milk or colostrum and the potential effects of milk-borne IGF-compounds on the consuming organisms have in fact been addressed by several studies...
August 2017: Best Practice & Research. Clinical Endocrinology & Metabolism
https://www.readbyqxmd.com/read/29217872/an-integrated-bioprocess-to-recover-bovine-milk-oligosaccharides-from-colostrum-whey-permeate
#8
Juliana M L N de Moura Bell, Joshua L Cohen, Leticia F M C de Aquino, Hyeyoung Lee, Vitor L de Melo Silva, Yan Liu, Paola Domizio, Daniela Barile
A major challenge in isolating oligosaccharides from dairy streams is to enrich oligosaccharides while simultaneously reducing the content of simple sugars (mono- and disaccharides) that do not possess the desired prebiotic functions. An integrated approach based on optimized conditions that favor maximum lactose hydrolysis, monosaccharide fermentation and oligosaccharides recovery by nanofiltration was developed. Upon complete lactose hydrolysis and fermentation of the monosaccharides by yeast, nanofiltration of fermented whey permeate from colostrum enabled the recovery of 95% of the oligosaccharides at high purity...
January 2018: Journal of Food Engineering
https://www.readbyqxmd.com/read/29216922/lactic-fermented-egg-white-improves-visceral-fat-obesity-in-japanese-subjects-double-blind-placebo-controlled-study
#9
Ryosuke Matsuoka, Keiko Kamachi, Mika Usuda, Wei Wang, Yasunobu Masuda, Masaaki Kunou, Akira Tanaka, Kazunori Utsunomiya
BACKGROUND: It was reported that egg white protein (EWP) reduced body fat in rats. We developed a lactic-fermented egg white (LE) that facilitates the consumption of egg whites by fermenting them with lactobacillus, and were able to study their intake in humans. In this double-blind, placebo-controlled design, we evaluated the effect of LE on visceral fat area (VFA). METHODS: Participants included 37 adult males and females aged ≥40 years (VFA at navel ≥100 cm2)...
December 8, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/29216512/interaction-between-cereal-%C3%AE-glucan-and-proteins-in-solution-and-at-interfaces
#10
Claudia Zielke, Yi Lu, Romane Poinsot, Lars Nilsson
Cereal β-glucan is well known for its beneficial health effects, such as lowering of blood cholesterol values and a reduced risk of coronary heart disease. These effects are often discussed in relation to the dissolution and aggregation behavior of the β-glucan during human digestion. Furthermore, potential proteinaceous material present is believed to have an important impact on the formation of viscous slurries during digestion and might influence the aggregation behavior of the β-glucan. Therefore, the interaction and aggregation behavior of a β-glucan isolate (OBC90) with two different proteins (gliadin and whey protein) was investigated in solution at different pH with regards to kinetics of aggregation and protein/β-glucan ratio and at interfaces...
November 24, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29216438/antiulcerative-activity-of-milk-proteins-hydrolysates
#11
Wilman Carrillo, Karin Maia Monteiro, Daniel Martínez-Maqueda, Mercedes Ramos, Isidra Recio, João Ernesto de Carvalho
Several studies have shown the protective effect of dairy products, especially α-lactalbumin and derived hydrolysates, against induced gastric ulcerative lesions. The mucus strengthening represents an important mechanism in the defense of gastrointestinal mucosa. Previously, a hydrolysate from casein (CNH) and a hydrolysate from whey protein concentrate rich in β-lactoglobulin (WPH) demonstrated a stimulatory activity on mucus production in intestinal goblet cells. The aim of this work was to evaluate the possible antiulcerative activity of these two hydrolysates in an ethanol-induced ulcer model in rats...
December 7, 2017: Journal of Medicinal Food
https://www.readbyqxmd.com/read/29216301/chronic-dietary-supplementation-with-soy-protein-improves-muscle-function-in-rats
#12
Ramzi J Khairallah, Karen M O'Shea, Christopher W Ward, Dustie N Butteiger, Ratna Mukherjea, Elaine S Krul
Athletes as well as elderly or hospitalized patients use dietary protein supplementation to maintain or grow skeletal muscle. It is recognized that high quality protein is needed for muscle accretion, and can be obtained from both animal and plant-based sources. There is interest to understand whether these sources differ in their ability to maintain or stimulate muscle growth and function. In this study, baseline muscle performance was assessed in 50 adult Sprague-Dawley rats after which they were assigned to one of five semi-purified "Western" diets (n = 10/group) differing only in protein source, namely 19 kcal% protein from either milk protein isolate (MPI), whey protein isolate (WPI), soy protein isolate (SPI), soy protein concentrate (SPC) or enzyme-treated soy protein (SPE)...
2017: PloS One
https://www.readbyqxmd.com/read/29214924/different-protein-and-derivatives-supplementation-strategies-combined-with-resistance-training-in-pre-frail-and-frail-elderly-rationale-and-protocol-for-the-pro-elderly-study
#13
Alan Lins Fernandes, Ana Paula Hayashi, José Claudio Jambassi-Filho, Mariana Dutilh de Capitani, Davi Alves de Santana, Bruno Gualano, Hamilton Roschel
BACKGROUND: Frailty is a multifactorial geriatric syndrome characterized by progressive decline in health and associated with decreased muscle mass, strength, and functional capacity. Resistance training (RT) combined with protein or amino acids supplementation has been shown to be promising for mitigating age-related impairments. AIM: To investigate the chronic effects of different strategies of protein and derivatives supplementation in association with RT on selected health-related parameters in pre-frail and frail elderly...
December 2017: Nutrition and Health
https://www.readbyqxmd.com/read/29214323/economic-value-of-using-partially-hydrolysed-infant-formula-for-risk-reduction-of-atopic-dermatitis-in-high-risk-infants-not-exclusively-breastfed-in-singapore
#14
Marc F Botteman, Abhijeet J Bhanegaonkar, Erica G Horodniceanu, Xiang Ji, Bee Wah Lee, Lynette P Shek, Hugo Ps Van Bever, Patrick Detzel
INTRODUCTION: Previous trials have demonstrated reductions in atopic dermatitis (AD) incidence when healthy, high-risk, non-exclusively breastfed infants were fed until four months of age with 100% whey-based partially hydrolysed formula (PHF-W) versus standard cow's milk formula (CMF). We assessed this intervention's cost-effectiveness in Singapore. METHODS: Modelling techniques were used to simulate, from birth to Month 30, the incidence, and clinical and economic burden of AD in high-risk, non-exclusively breastfed infants fed with PHF-W or CMF for up to four months...
December 7, 2017: Singapore Medical Journal
https://www.readbyqxmd.com/read/29209903/influence-of-a-co-culture-of-streptococcus-thermophilus-and-lactobacillus-casei-on-the-proteolysis-and-ace-inhibitory-activity-of-a-beverage-based-on-reconstituted-goat-whey-powder
#15
Áurea Marcela de Souza Pereira, Daniely Rayane Bezerra de Farias, Blenda Brito de Queiroz, Michelangela Suelleny de Caldas Nobre, Mônica Tejo Cavalcanti, Hévila Oliveira Salles, Karina Maria Olbrich Dos Santos, Ana Claudia Dantas de Medeiros, Eliane Rolim Florentino, Flávia Carolina Alonso Buriti
The potential for reusability of whey is of concern due to its substantial nutritional value and, second, in view of the need to reduce environmental impact. The use of goat whey powder in the production of a fermented dairy beverage using a Lactobacillus casei culture as adjunct shows a good prospect of a food product with hypotensive activity. This study investigated the microbial viability, proteolysis and angiotensin-converting enzyme (ACE) inhibitory activity of a fermented dairy beverage produced with goat whey powder and a probiotic culture of L...
December 5, 2017: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/29208497/molecular-cloning-expression-promoter-analysis-and-functional-characterization-of-a-new-crustin-from-litopenaeus-vannamei
#16
Ming Li, Chunxia Ma, Haoyang Li, Jinxia Peng, Digang Zeng, Xiaohan Chen, Chaozheng Li
Antimicrobial peptides (AMPs) are the most important players in the innate immune system, providing a principal first-line of defense against the invading pathogens. Crustin, a type of whey acidic protein (WAP) domain-containing and cationic cysteine-rich AMP, can function in a protease inhibition or an effector molecule manner. In the present study, a new Crustin was cloned and identified from Pacific white shrimp Litopenaeus vannamei and designated as LvCrustinA. The full-length cDNA of LvCrustinA was 687 bp, with a 519 bp open reading frame (ORF) that encoded a peptide of 172 amino acids...
December 5, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29204423/dual-coating-of-liposomes-as-encapsulating-matrix-of-antimicrobial-peptides-development-and-characterization
#17
Ahmed I Gomaa, Cynthia Martinent, Riadh Hammami, Ismail Fliss, Muriel Subirade
Antimicrobial peptides have been proposed as a potential biopreservatives in pharmaceutical research and agribusiness. However, many limitations hinder their utilization, such as their vulnerability to proteolytic digestion and their potential interaction with other food ingredients in complex food systems. One approach to overcome such problems is developing formulations entrapping and thereby protecting the antimicrobial peptides. Liposome encapsulation is a strategy that could be implemented to combine protection of the antimicrobial activity of the peptides from proteolytic enzymes and the controlled release of the encapsulated active ingredients...
2017: Frontiers in Chemistry
https://www.readbyqxmd.com/read/29202920/target-selection-strategies-for-lc-ms-ms-food-allergen-methods
#18
Melanie L Downs, Philip Johnson
The detection and quantitation of allergens as contaminants in foods using MS is challenging largely due to the requirement to detect proteins in complex, mixed, and often processed matrixes. Such methods necessarily rely on the use of proteotypic peptides as indicators of the presence and amount of allergenic foods. These peptides should represent the allergenic food in question in such a way that their use is both sensitive (no false-negatives) and specific (no false-positives). Choosing such peptides to represent food allergens is beset with issues, including, but not limited to, separated ingredients (e...
December 5, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/29200983/the-short-term-effect-of-high-versus-moderate-protein-intake-on-recovery-after-strength-training-in-resistance-trained-individuals
#19
Justin Roberts, Anastasia Zinchenko, Craig Suckling, Lee Smith, James Johnstone, Menno Henselmans
Background: Dietary protein intakes up to 2.9 g.kg-1.d-1 and protein consumption before and after resistance training may enhance recovery, resulting in hypertrophy and strength gains. However, it remains unclear whether protein quantity or nutrient timing is central to positive adaptations. This study investigated the effect of total dietary protein content, whilst controlling for protein timing, on recovery in resistance trainees. Methods: Fourteen resistance-trained individuals underwent two 10-day isocaloric dietary regimes with a protein content of 1...
2017: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/29200982/native-whey-protein-with-high-levels-of-leucine-results-in-similar-post-exercise-muscular-anabolic-responses-as-regular-whey-protein-a-randomized-controlled-trial
#20
Håvard Hamarsland, Anne Lene Nordengen, Sigve Nyvik Aas, Kristin Holte, Ina Garthe, Gøran Paulsen, Matthew Cotter, Elisabet Børsheim, Haakon B Benestad, Truls Raastad
Background: Protein intake is essential to maximally stimulate muscle protein synthesis, and the amino acid leucine seems to possess a superior effect on muscle protein synthesis compared to other amino acids. Native whey has higher leucine content and thus a potentially greater anabolic effect on muscle than regular whey (WPC-80). This study compared the acute anabolic effects of ingesting 2 × 20 g of native whey protein, WPC-80 or milk protein after a resistance exercise session...
2017: Journal of the International Society of Sports Nutrition
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