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https://www.readbyqxmd.com/read/28427739/boosting-biogas-production-from-sewage-sludge-by-adding-small-amount-of-agro-industrial-by-products-and-food-waste-residues
#1
A E Maragkaki, M Fountoulakis, A Kyriakou, K Lasaridi, T Manios
In Greece, in many cities, wastewater treatment plants (WWTPs) operate their own anaerobic digestion (AD) facility in order to treat sewage sludge rather than achieve optimum biogas production. Nowadays, there is a growing interest regarding the addition of other co-substrates in these existing facilities in order to increase gas yield from the biomass. This practice may be possible by adding small amount of co-substrates which will not affect significantly in the designed hydraulic retention time. Nonetheless, the lack of experimental data regarding this option is a serious obstacle...
April 17, 2017: Waste Management
https://www.readbyqxmd.com/read/28427686/ultrasound-assisted-acid-catalyzed-lactose-hydrolysis-understanding-into-effect-of-operating-parameters-and-scale-up-studies
#2
Chinmay N Gajendragadkar, Parag R Gogate
The current work deals with the value addition of lactose by transforming into hydrolyzed lactose syrup containing glucose and galactose in major proportion using the novel approach of ultrasound assisted acid catalyzed lactose hydrolysis. The hydrolysis of lactose was performed in ultrasonic bath (33kHz) at 50% duty cycle at different temperatures as 65°C and 70°C and two different hydrochloric acid (HCl) concentrations as 2.5N and 3N. It was observed that acid concentration, temperature and ultrasonic treatment were the major factors in deciding the time required to achieve ∼90% hydrolysis...
July 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28422532/effects-of-post-exercise-protein-intake-on-muscle-mass-and-strength-during-resistance-training-is-there-an-optimal-ratio-between-fast-and-slow-proteins
#3
Marina Fabre, Christophe Hausswirth, Eve Tiollier, Odeline Molle, Julien Louis, Alexandre Durguerian, Nathalie Neuveux, Xavier Bigard
While effects of the two classes of proteins found in milk (i.e. soluble proteins, including whey, and casein) on muscle protein synthesis have been well investigated after a single bout of resistance exercise (RE), the combined effects of these two proteins on the muscle responses to resistance training (RT) have not yet been investigated. Therefore, the aim of this study was to examine the effects of protein supplementation varying by the ratio between milk soluble proteins (fast-digested protein) and casein (slow-digested protein) on the muscle to a 9-week RT program...
April 19, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/28417910/effects-of-three-commercially-available-sports-drinks-on-substrate-metabolism-and-subsequent-endurance-performance-in-a-postprandial-state
#4
Lu Qin, Qi-Rong Wang, Zi-Long Fang, Ting Wang, Ai-Qi Yu, Yu-Jie Zhou, Yi Zheng, Mu-Qing Yi
Purpose: To examine the effects of commercially available sports beverages with various components on substrate metabolism and subsequent performance. Methods: Two studies were conducted in a double-blinded, counterbalanced manner. Study I was designed to determine the glycemic index, while study II determined the utilization of substrates and subsequent exercise performance. Ten healthy male participants (age 21.70 ± 2.41 years, height 176.60 ± 5.23 cm, weight 66.58 ± 5.38 kg, V̇O2max 48.1 ± 8.4 mL/kg/min) participated in both study I and study II...
April 12, 2017: Nutrients
https://www.readbyqxmd.com/read/28417455/an-efficient-process-for-obtaining-of-prebiotic-oligosaccharides-derived-from-lactulose-using-isomerised-and-purified-whey-permeate
#5
Carlos Sabater, Agustín Olano, Marin Prodanov, Antonia Montilla, Nieves Corzo
BACKGROUND: One of the most promising uses of whey permeate (WP) is the synthesis of prebiotic oligosaccharides. Herein, commercial WP was submitted to chemical isomerisation catalysed by sodium borate at an alkaline pH and subsequent purification using anion-exchange resins to remove boron. Afterwards, purified mixtures were used to synthesise prebiotic oligosaccharides using β-galactosidase from Bacillus circulans. RESULTS: Isomerisation of concentrated WP (200 g L(-1) lactose) gave rise to levels of lactulose up to 155...
April 18, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28416866/rheology-and-microstructure-of-kefiran-and-whey-protein-mixed-gels
#6
Hosayn Kazazi, Faramarz Khodaiyan, Karamatollah Rezaei, Malihe Pishvaei, Mohammad Amin Mohammadifar, Sohrab Moieni
The effect of kefiran on cold-set gelation of whey protein isolate (WPI) at 25 °C was studied using rheological measurements and environmental scanning electron microscopy (ESEM). The gelation of samples was induced by the addition of glucono-δ-lactone to the dispersions. WPI concentration was maintained at 8% (w/v) and the concentration of kefiran varied from 0 to 0.08% (w/v). According to rheological measurements, the addition of kefiran into WPI dispersions resulted in a significant increase in the gel strength, the yield stress, and the shear stress values at the flowing point...
April 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28415067/effect-of-whey-protein-in-conjunction-with-a-caloric-restricted-diet-and-resistance-training
#7
Wesley D Dudgeon, Elizabeth P Kelley, Timothy P Scheett
Dudgeon, WD, Kelley, EP, and Scheett, TP. Effect of whey protein in conjunction with a caloric-restricted diet and resistance training. J Strength Cond Res 31(5): 1353-1361, 2017-Caloric-restricted weight loss, especially rapid weight loss, results from a decrease in both lean and fat mass (FM). The goal for many is to lose FM while retaining lean body mass (LBM) and muscular performance thus many turn to supplements. Sixteen resistance-trained men (24 ± 1.6 years of age) completed a 4 d·wk body building style split resistance training program for 8 weeks in conjunction with a pre-exercise, periexercise, and postexercise ingestion of whey protein (WHEY) nutritional supplement or carbohydrate (CON)-based nutritional supplement...
May 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28407858/influence-of-lipoproteins-at-dry-off-on-metabolism-of-dairy-cows-during-transition-period-and-on-postpartum-reproductive-outcomes
#8
Martina Crociati, Lakamy Sylla, Claudia Floridi, Antonella Comin, Gabriele Fruganti, Maurizio Monaci, Giuseppe Stradaioli
High-yielding dairy cows are metabolically challenged during transition, when intense mobilization and hepatic oxidation of lipids is achieved, thus leading to fatty infiltration, ketosis and generalized inflammation. The condition is associated to periparturient diseases and poor fertility. The aim of this study was to assess whether serum lipoprotein concentrations in the dry period could influence the occurrence of postpartum diseases and reproductive performance in dairy cows. The study was carried out on 30 multiparous Holstein Friesian cows...
May 2017: Theriogenology
https://www.readbyqxmd.com/read/28407600/efficacy-of-free-and-encapsulated-bacillus-lichenformis-strain-sl10-on-degradation-of-phenol-a-comparative-study-of-degradation-kinetics
#9
S Chris Felshia, N Aswin Karthick, R Thilagam, A Chandralekha, K S M S Raghavarao, A Gnanamani
The present study exemplifies phenol degradation efficacy of the free and encapsulated bacterial isolate, explored the degradation kinetics and storage stability in detail. In brief, isolation, identification and phenol degradation potential of the bacterial made from wastewater treated sludge samples. The organism identified as B. licheniformis demonstrates phenol degradation at a concentration more than 1500 ppm. Optimization of environmental parameters reduces the time taken for degradation considerably...
April 10, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28402599/obtention-and-characterization-of-dried-gels-prepared-with-whey-proteins-honey-and-hydrocolloids-mixture
#10
Ana C Rodriguez, Martín R Torrez, Alba S Navarro, Diego K Yamul
BACKGROUND: Large amounts of honey and liquid whey derived from the dairy industry are produced in Argentina. Honey is exported in bulk and whey is transformed into whey protein concentrates and isolates. The objective of this work was to investigate the effect of pH, composition and storage time on the properties of dried gels with honey, whey proteins and hydrocolloids. RESULTS: Colour properties varied according to pH and composition. The fracture stress of the dried gels prepared with corn starch was higher than those prepared with guar gum in all conditions assayed...
April 12, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28402582/mechanical-and-structural-characterization-of-whey-protein-concentrate-montmorilonite-lycopene-films
#11
Rafaela C Pereira, João de Deus S Carneiro, Odílio B G Assis, Soraia V Borges
BACKGROUND: In the present study, the production and characterization of nanocomposites based on whey protein concentrate (WPC) and montmorilonite (MMT) incorporated of lycopene as functional substance is presented and discussed as an alternative biomaterial for potential use in foodstuff applications. A full factorial design with varying levels of MMT (0 and 20 g.Kg(-1) ) and lycopene (0, 60 and 120 g.Kg(-1) ) was used. Mechanical properties (tensile and puncture tests), thermal stability analysis, FT-IR vibrational spectroscopy and film morphology of the resulting materials were evaluated...
April 12, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28399998/bacterial-ecology-of-artisanal-minas-cheeses-assessed-by-culture-dependent-and-independent-methods
#12
Luana Martins Perin, Maria Luisa Savo Sardaro, Luís Augusto Nero, Erasmo Neviani, Monica Gatti
Artisanal Minas cheese is produced in Minas Gerais state, Brazil and its varieties are named according to their geographical origin (Serro, Canastra, Serra do Salitre, Araxá and Campo das Vertentes). The cheese is produced with raw cow's milk and the whey from the previous cheese production ("pingo"). The high economic and cultural importance of artisanal cheese in Brazil justifies the efforts to ensure its safety, quality and provenance. This study aimed to characterize the microbial diversity composition, and geographical distribution of artisanal Minas cheese, focusing on the characterization of its autochthonous lactic acid bacteria (LAB) microbiota...
August 2017: Food Microbiology
https://www.readbyqxmd.com/read/28399016/the-effects-of-beef-chicken-or-whey-protein-post-workout-on-body-composition-and-muscle-performance
#13
Matthew H Sharp, Ryan P Lowery, Kevin A Shields, Jason R Lane, Jocelyn L Gray, Jeremy M Partl, Daniel W Hayes, Gabriel J Wilson, Chase A Hollmer, Julie R Minivich, Jacob M Wilson
The purpose of this study was to determine the effects of post-workout consumption of beef protein isolate (Beef), hydrolyzed chicken protein (Chx) or whey protein concentrate (WPC), compared to a control on lean mass and strength during 8 weeks of resistance training. Forty-one males and females were randomized into four groups: WPC (m=5, f=5; Age (yrs)=19 ± 2, Height (cm)=171 ± 10, Mass (kg)= 74.60 ± 14.19), Beef (m=5, f=5; Age (yrs)=22 ± 4, Height (cm)=170 ± 7, Mass (kg)=70.13 ± 8.16), ChxC(m=5, f=6; Age (yrs)=21 ± 2, Height (cm)=169 ± 9, Mass (kg)=74...
April 7, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28397754/oral-supplementation-with-bovine-colostrum-decreases-intestinal-permeability-and-stool-concentrations-of-zonulin-in-athletes
#14
Maciej Hałasa, Dominika Maciejewska, Magdalena Baśkiewicz-Hałasa, Bogusław Machaliński, Krzysztof Safranow, Ewa Stachowska
Increased intestinal permeability has been implicated in various pathologies, has various causes, and can develop during vigorous athletic training. Colostrum bovinum is a natural supplement with a wide range of supposed positive health effects, including reduction of intestine permeability. We assessed influence of colostrum supplementation on intestinal permeability related parameters in a group of 16 athletes during peak training for competition. This double-blind placebo-controlled study compared supplementation for 20 days with 500 mg of colostrum bovinum or placebo (whey)...
April 8, 2017: Nutrients
https://www.readbyqxmd.com/read/28394725/repeated-batch-fermentation-of-immobilized-e-coli-expressing-vitreoscilla-hemoglobin-for-long-term-use
#15
Taner Sar, Gamze Seker, Ayse Gokce Erman, Benjamin C Stark, Meltem Yesilcimen Akbas
This study describes an efficient and reusable process for ethanol production from medium containing whey powder, using alginate immobilized ethanologenic E. coli strains either expressing (TS3) or not expressing (FBR5) Vitreoscilla hemoglobin. Reuseabilities of the FBR5 and TS3 strains were investigated regarding their ethanol production capacities over the course of 15 successive 96-h batch fermentations. The ethanol production was fairly stable over the entire duration of the experiment, with strain TS3 maintaining a substantial advantage over strain FBR5...
April 10, 2017: Bioengineered
https://www.readbyqxmd.com/read/28392783/agro-industrial-wastes-for-production-of-biosurfactant-by-bacillus-subtilis-anr-88-and-its-application-in-synthesis-of-silver-and-gold-nanoparticles
#16
Ashwini N Rane, Vishakha V Baikar, D V Ravi Kumar, Rajendra L Deopurkar
Biosurfactants, surface-active amphiphilic compounds, despite having a wide range of applications, have a high cost of production, which severely restricts their use. For cheaper production of biosurfactant, we investigated the potential of the indigenously isolated biosurfactant producing organism, Bacillus subtilis ANR 88, to grow on different cheap carbon sources (molasses, whey, and extracts of potato peels, orange peels, banana peels, and bagasse). We found that, B. subtilis ANR 88 used significant amounts of total sugar to produce cell biomass and biosurfactant...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28389248/effects-of-whey-protein-and-its-two-major-protein-components-on-satiety-and-food-intake-in-normal-weight-women
#17
Sylvia M S Chungchunlam, Sharon J Henare, Siva Ganesh, Paul J Moughan
Protein is the most satiating macronutrient and is source dependent, with whey protein thought to be particularly satiating. The purported satiating effect of whey protein may be due to the unique mixture of proteins in whey or to the major constituent individual proteins (β-lactoglobulin and α-lactalbumin). The objective of the study was to compare the effects of isoenergetic (~2100kJ, ~500kcal) preload meals enriched (~50g protein) with either whey protein isolate (WP), β-lactoglobulin (BL) isolate or α-lactalbumin (AL) isolate, on food intake at an ad libitum test meal 120min later and subjective ratings of appetite (hunger, desire to eat, prospective food consumption and fullness) using visual analogue scales (VAS)...
April 4, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28386391/pellet-free-isolation-of-human-and-bovine-milk-extracellular-vesicles-by-size-exclusion-chromatography
#18
Kristine Blans, Maria S Hansen, Laila V Sørensen, Michael L Hvam, Kenneth A Howard, Arne Möller, Lars Wiking, Lotte B Larsen, Jan T Rasmussen
Studies have suggested that nanoscale extracellular vesicles (EV) in human and bovine milk carry immune modulatory properties which could provide beneficial health effects to infants. In order to assess the possible health effects of milk EV, it is essential to use isolates of high purity from other more abundant milk structures with well-documented bioactive properties. Furthermore, gentle isolation procedures are important for reducing the risk of generating vesicle artefacts, particularly when EV subpopulations are investigated...
2017: Journal of Extracellular Vesicles
https://www.readbyqxmd.com/read/28382889/values-for-digestible-indispensable-amino-acid-scores-diaas-for-some-dairy-and-plant-proteins-may-better-describe-protein-quality-than-values-calculated-using-the-concept-for-protein-digestibility-corrected-amino-acid-scores-pdcaas
#19
John K Mathai, Yanhong Liu, Hans H Stein
An experiment was conducted to compare values for digestible indispensable amino acid scores (DIAAS) for four animal proteins and four plant proteins with values calculated as recommended for protein digestibility-corrected amino acid scores (PDCAAS), but determined in pigs instead of in rats. Values for standardised total tract digestibility (STTD) of crude protein (CP) and standardised ileal digestibility (SID) of amino acids (AA) were calculated for whey protein isolate (WPI), whey protein concentrate (WPC), milk protein concentrate (MPC), skimmed milk powder (SMP), pea protein concentrate (PPC), soya protein isolate (SPI), soya flour and whole-grain wheat...
February 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28382449/fate-of-copper-nickel-and-zinc-after-biogas-digestate-application-to-three-different-soil-types
#20
Ivan Dragicevic, Susanne Eich-Greatorex, Trine Aulstad Sogn, Roar Linjordet, Tore Krogstad
Soil application of organic residues from anaerobic digestion of municipal food waste and/or sewage sludge may introduce considerable amounts of heavy metals into the environment. In a column leaching experiment, mobility and release of Cu, Ni and Zn were investigated in three contrasting soils (sand, silt, loam) fertilized with biogas digestates of different origin. The effect of commercial digestates, based on food waste and sewage sludge, was compared to that of experimental digestates based on animal manure and whey permeate with or without fish ensilage, as well as untreated manure, mineral fertilizer and an untreated control...
April 5, 2017: Environmental Science and Pollution Research International
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