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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/27878590/use-of-saline-waste-water-from-demineralization-of-cheese-whey-for-cultivation-of-schizochytrium-limacinum-pa-968-and-japonochytrium-marinum-an-4
#3
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/27777463/comparative-analysis-of-mozzarella-cheeses-fortified-with-whey-protein-hydrolysates-diverse-in-hydrolysis-time-and-concentrations
#4
Renda Kankanamge Chaturika Jeewanthi, Na-Kyoung Lee, Bo-Ram Mok, Yoh Chang Yoon, Hyun-Dong Paik
The objective of the present study was to improve the quality of mozzarella cheese using whey protein concentrates (WPCs) hydrolyzed for varying lengths of time (1 and 3 h). Four types of cheeses were made incorporating hydrolyzed WPCs in milk 3 and 6 % level and evaluated for nutritional, structural, and functional properties during 28 days storage at 4 °C. Whey protein hydrolysates (WPHs) incorporation increased protein, lactose, minerals, water-soluble-protein, non-protein-nitrogen. Mozzarella incorporated with WPHs hydrolyzed for 3 h had higher fat contents, favorable meltability and lower browning effect, stretchability, brittleness, springiness, and cohesiveness compared to mozzarella fortified with WPHs hydrolyzed for 1 h...
September 2016: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/27765964/properties-and-storage-stability-of-whey-protein-edible-film-with-spice-powders
#5
Apisada Ket-On, Natkritta Pongmongkol, Anongnat Somwangthanaroj, Theeranun Janjarasskul, Kanitha Tananuwong
The impact of spice powders on physical, mechanical, thermal and barrier properties, and on storage stability, of whey protein isolate (WPI)-based films was determined. Films with added spices were prepared from casting solution containing 10 % (w/w) heat-denatured WPI, glycerol (WPI:glycerol of 3:2 w/w), sodium chloride (0.4 g/100 g solution), garlic and pepper powders (≤3 g each/100 g solution). Water activity (aw) of all films was 0.53-0.57. Addition of spice powders increased thickness, darkness and yellowness of the WPI films...
July 2016: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/27765230/fluorescence-imaging-of-spatial-location-of-lipids-and-proteins-during-digestion-of-protein-stabilized-oil-in-water-emulsions-a-simulated-gastrointestinal-tract-study
#6
Saehun Mun, Jisu Kim, David Julian McClements, Yong-Ro Kim, Yongdoo Choi
A whey protein isolate-rhodamine B conjugate (WPI-RB) was synthesized to visualize changes in the location of a protein emulsifier in oil-in-water emulsions during digestion. An oil-soluble dye (Nile Red) was used to visualize changes in the lipid phase during digestion. Protein-labeled and lipid-labeled emulsions were passed through a simulated gastrointestinal tract consisting of mouth, stomach, and intestinal phases, and changes in protein and lipid location and morphology were monitored using confocal laser scanning microscopy...
March 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27765213/influence-of-ph-on-viscoelastic-properties-of-heat-induced-gels-obtained-with-a-%C3%AE-lactoglobulin-fraction-isolated-from-bovine-milk-whey-hydrolysates
#7
Natalia Estévez, Pablo Fuciños, Verónica Bargiela, Guillermo Picó, Nadia Woitovich Valetti, Clara Asunción Tovar, M Luisa Rúa
A β-Lactoglobulin fraction (r-βLg) was isolated from whey hydrolysates produced with cardosins from Cynara cardunculus. The impact of the hydrolysis process on the r-βLg structure and the rheological properties of heat-induced gels obtained thereafter were studied at different pH values. Differences were observed between r-βLg and commercial β-Lg used as control. Higher values for the fluorescence emission intensity and red shifts of the emission wavelength of r-βLg suggested changes in its tertiary structure and more solvent-exposed tryptophan residues...
March 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27704291/dynamic-measures-of-skeletal-muscle-dialysate-and-plasma-amino-acid-concentration-in-response-to-exercise-and-nutrient-ingestion-in-healthy-adult-males
#8
William G McCormack, John P Cooke, William T O'Connor, Philip M Jakeman
Nutrient stimulation of muscle protein synthesis (MPS) is regulated by the change in extracellular essential amino acid (EAA) concentration. In vivo microdialysis (MD) is a minimally invasive sampling technique, capable of sampling solute in the interstitial space of a target tissue. In a contralateral limb design (REST vs. EX), this study utilised in vivo MD to examine the change in skeletal muscle dialysate amino acid concentration following ingestion of whey protein isolate (WPI) and flavoured water (CON)...
October 4, 2016: Amino Acids
https://www.readbyqxmd.com/read/27691996/variation-of-milk-coagulation-properties-cheese-yield-and-nutrients-recovery-in-curd-of-cows-of-different-breeds-before-during-and-after-transhumance-to-highland-summer-pastures
#9
Francesco Zendri, Maurizio Ramanzin, Claudio Cipolat-Gotet, Enrico Sturaro
This paper aimed at evaluating the effect of summer transhumance to mountain pastures of dairy cows of different breeds on cheese-making ability of milk. Data were from 649 dairy cows of specialized (Holstein Friesian and Brown Swiss) dual purpose (Simmental) and local (mostly Rendena and Alpine Grey) breeds. The Fourier-Transform Infra-Red Spectra (FTIRS) of their milk samples were collected before and after transhumance in 109 permanent dairy farms, and during transhumance in 14 summer farms (with multi-breeds herds) of the Trento Province, north-eastern Italy...
October 3, 2016: Journal of Dairy Research
https://www.readbyqxmd.com/read/27684196/novel-production-protocol-for-small-scale-manufacture-of-probiotic-fermented-foods
#10
Nieke Westerik, Alex Paul Wacoo, Wilbert Sybesma, Remco Kort
A novel dried bacterial consortium of Lactobacillus rhamnosus yoba 2012 and Streptococcus thermophilus C106 is cultured in 1 L of milk. This fresh starter can be used for the production of fermented milk and other fermented foods either at home or at small-scale in rural settings. For the fresh starter, 1 L of milk is pasteurized in a pan that fits into a larger pan containing water, placed on a source of heat. In this water bath, the milk is heated and incubated at 85 °C for 30 min. Thereafter, the milk is cooled down to 45 °C, transferred to a vacuum flask, inoculated with the dried bacteria and left for at least 16 hr between 30 °C and 45 °C...
September 10, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27636707/characterization-of-chemically-and-thermally-treated-oil-in-water-heteroaggregates-and-comparison-to-conventional-emulsions
#11
Christiane Maier, Corina L Reichert, Jochen Weiss
Heteroaggregated oil-in-water (O/W) emulsions formed by targeted combination of oppositely charged emulsion droplets were proposed to be used for the modulation of physical properties of food systems, ideally achieving the formation of a particulate 3-dimensional network at comparably low-fat content. In this study, rheological properties of Quillaja saponins (QS), sugar beet pectin (SBP), and whey protein isolate (WPI) stabilized conventional and heteroaggregated O/W emulsions at oil contents of 10% to 60% (w/w) were investigated...
October 2016: Journal of Food Science
https://www.readbyqxmd.com/read/27611102/diets-enriched-in-whey-or-casein-improve-energy-balance-and-prevent-morbidity-and-renal-damage-in-salt-loaded-and-high-fat-fed-spontaneously-hypertensive-stroke-prone-rats
#12
Arashdeep Singh, Adel Pezeshki, Rizaldy C Zapata, Nicholas J Yee, Cameron G Knight, Ursula I Tuor, Prasanth K Chelikani
High-fat diets induce obesity and increase risks of diabetes and cardiovascular and renal disorders. Whey- or casein-enriched diets decrease food intake and weight gain; however, their cardiovascular and renal benefits are unclear. We determined whether whey- and casein-enriched diets improve energy balance and are protective against renal damage and morbidity associated with stroke in an obesogenic and hypertensive experimental setting. We also assessed whether the hypophagic effects of these diets were due to reduced diet preference...
August 13, 2016: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/27600977/lactose-behaviour-in-the-presence-of-lactic-acid-and-calcium
#13
Rangani Wijayasinghe, Todor Vasiljevic, Jayani Chandrapala
Physical properties of lactose appeared influenced by presence of lactic acid in the system. Some other components such as Ca may further attenuate lactose behaviour and impact its phase transition. A model-based study was thus implemented with varying concentrations of Ca (0·12, 0·072 or 0·035% w/w) and lactic acid (0·05, 0·2, 0·4 or 1% w/w) in establishing the effects of these two main acid whey constituents on lactose phase behaviour. Concentrated solutions (50% w/w) containing lactose, lactic acid and Ca were analysed for thermal behaviour and structural changes by Differential Scanning Colorimetry (DSC) and Fourier Transform Infrared Spectroscopy (FTIR), respectively...
August 2016: Journal of Dairy Research
https://www.readbyqxmd.com/read/27568055/influence-of-hydrodynamic-cavitation-on-the-rheological-properties-and-microstructure-of-formulated-greek-style-yogurts
#14
G H Meletharayil, L E Metzger, Hasmukh A Patel
With limited applications of acid whey generated during the manufacture of Greek yogurts, an alternate processing technology to sidestep the dewheying process was developed. Milk protein concentrate (MPC) and carbon dioxide-treated milk protein concentrate (TMPC) were used as sources of protein to fortify skim milk to 9% (wt/wt) protein for the manufacture of Greek-style yogurts (GSY). The GSY bases were inoculated and fermented with frozen direct vat set yogurt culture to a pH of 4.6. Owing to the difference in buffering of MPC and TMPC, GSY with TMPC and MPC exhibited different acidification kinetics, with GSY containing TMPC having a lower fermentation time...
August 24, 2016: Journal of Dairy Science
https://www.readbyqxmd.com/read/27561482/characterization-of-whey-protein-carboxymethylated-chitosan-composite-films-with-and-without-transglutaminase-treatment
#15
Shu-Juan Jiang, Xuan Zhang, Ying Ma, Yanfeng Tuo, Fang Qian, Wenjia Fu, Guangqing Mu
Edible composite packaging has the advantage of complementary functional properties over its each bio-components. However, reports on whey protein concentrates (WPC)-carboxymethylated chitosan (CMC) composite films have not yet been released. To investigate the preparation of WPC-CMC composite films and its functional properties, four types of WPC-CMC composite films were prepared with and without Transglutaminase (TGase) treatment by mixing WPC aqueous solutions (10%, w/v) with CMC aqueous solutions (3%, w/v) at WPC to CMC volume ratios of (100:0), (75:25), (50:50), and (25:75)...
November 20, 2016: Carbohydrate Polymers
https://www.readbyqxmd.com/read/27549740/food-protein-based-phytosterol-nanoparticles-fabrication-and-characterization
#16
Wen-Jun Cao, Shi-Yi Ou, Wei-Feng Lin, Chuan-He Tang
The development of food-grade (nano)particles as a delivery system for poorly water soluble bioactives has recently attracted increasing attention. This work is an attempt to fabricate food protein-based nanoparticles as delivery systems for improving the water dispersion and bioaccessibility of phytosterols (PS) by an emulsification-evaporation method. The fabricated PS nanoparticles were characterized in terms of particle size, encapsulation efficiency (EE%) and loading amount (LA), and ξ-potential. Among all the test proteins, including soy protein isolate (SPI), whey protein concentrate (WPC) and sodium caseinate (SC), SC was confirmed to be the most suitable protein for the PS nano-formulation...
September 14, 2016: Food & Function
https://www.readbyqxmd.com/read/27543752/treatment-of-wastewater-from-the-dairy-industry-using-electroflocculation-and-solid-whey-recovery
#17
Marina S Melchiors, Mauricio Piovesan, Vitor R Becegato, Valter A Becegato, Elias B Tambourgi, Alexandre T Paulino
The aim of this study was to investigate the efficiency of electroflocculation for the treatment of wastewater from the dairy industry and the recovery of solid whey. An electrochemical apparatus containing two aluminum or iron electrodes, a power source, an electroflocculation cell and magnetic stirring was employed. The following experimental conditions were monitored: electroflocculation time, initial pH of wastewater and applied potential intensity. Chemical oxygen demand, turbidity and final pH were the response variables...
November 1, 2016: Journal of Environmental Management
https://www.readbyqxmd.com/read/27542743/growth-kinetics-and-physiological-behavior-of-co-cultures-of-saccharomyces-cerevisiae-and-kluyveromyces-lactis-fermenting-carob-sugars-extracted-with-whey
#18
B Rodrigues, M E Lima-Costa, A Constantino, S Raposo, C Felizardo, D Gonçalves, T Fernandes, L Dionísio, J M Peinado
Alcoholic fermentation of carob waste sugars (sucrose, glucose and fructose) extracted with cheese whey, by co-cultures of Saccharomyces cerevisiae and Kluyveromyces lactis has been analyzed. Growth and fermentation of S. cerevisiae in the carob-whey medium showed an inhibition of about 30% in comparison with water-extracted carob. The inhibition of K. lactis on carob-whey was greater (70%) when compared with the whey medium alone, due to osmolarity problems. Oxygen availability was a very important factor for K...
October 2016: Enzyme and Microbial Technology
https://www.readbyqxmd.com/read/27507005/pubertal-status-pre-meal-drink-composition-and-later-meal-timing-interact-in-determining-children-s-appetite-and-food-intake
#19
Barkha P Patel, Jill K Hamilton, Shirley Vien, Scott G Thomas, G Harvey Anderson
Puberty is a period of development that alters energy intake patterns. However, few studies have examined appetite and food intake (FI) regulation during development of puberty in children and adolescents. Therefore, the objective was to measure the effect of pubertal status on FI and subjective appetite after pre-meal glucose and whey protein drinks in 9- to 14-year-old boys and girls. In a within-subject, randomized, repeated-measures design, children (21 pre-early pubertal, 15 mid-late pubertal) received equally sweetened drinks containing Sucralose (control), glucose, or whey protein (0...
September 2016: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/27476512/effect-of-phytosterols-on-the-crystallization-behavior-of-oil-in-water-milk-fat-emulsions
#20
Lisa M Zychowski, Amy Logan, Mary Ann Augustin, Alan L Kelly, Alexandru Zabara, James A O'Mahony, Charlotte E Conn, Mark A E Auty
Milk has been used commercially as a carrier for phytosterols, but there is limited knowledge on the effect of added plant sterols on the properties of the system. In this study, phytosterols dispersed in milk fat at a level of 0.3 or 0.6% were homogenized with an aqueous dispersion of whey protein isolate (WPI). The particle size, morphology, ζ-potential, and stability of the emulsions were investigated. Emulsion crystallization properties were examined through the use of differential scanning calorimetry (DSC) and Synchrotron X-ray scattering at both small and wide angles...
August 31, 2016: Journal of Agricultural and Food Chemistry
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