scholarly journals Effects of milk supplementation with skim milk powder, whey protein concentrate and sodium caseinate on acidification kinetics, rheological properties and structure of nonfat stirred yogurt

LWT ◽  
2009 ◽  
Vol 42 (10) ◽  
pp. 1744-1750 ◽  
Author(s):  
M.R. Damin ◽  
M.R. Alcântara ◽  
A.P. Nunes ◽  
M.N. Oliveira
Keyword(s):  
Rheological Properties ◽  
Whey Protein ◽  
Milk Powder ◽  
Skim Milk ◽  
Sodium Caseinate ◽  
Skim Milk Powder ◽  
Whey Protein Concentrate ◽  
Protein Concentrate

A fluorimetric method for determination ofPseudomonas fluorescensAR11 lipase in skim milk powder, whey powder and whey protein concentrate

1984 ◽  
Vol 51 (4) ◽  
pp. 623-628 ◽  
Author(s):  
Donald Stead
Keyword(s):  
Whey Protein ◽  
Lipolytic Activity ◽  
Sodium Taurocholate ◽  
Milk Powder ◽  
Skim Milk ◽  
Milk Proteins ◽  
Skim Milk Powder ◽  
Whey Protein Concentrate ◽  
Protein Concentrate ◽  
Whey Powder

SummaryA method which was developed for assaying the extracellular lipases of psychrotrophic bacteria in milk (Stead, 1983, 1984) and which uses the fluorogenic substrate 4-methylumbelliferyl oleate has been adapted for use with skim milk powder (SMP), whey powder (WP) and whey protein concentrate (WPC). A five-fold increase in the concentration of sodium taurocholate (NaTC), in the mixture of NaTC and cetyltrimethylammonium bromide needed to dissociate lipase from milk proteins, removed the excessive sensitivity of the assay to variations in the concentrations of SMP, WP or WPC incorporated. Commercially available pancreatic lipase provided a suitable standard of lipolytic activity and as little as 1–2 μ could be detected in each assay system.

scholarly journals Karakteristik Fisikokimia Yogurt Tanpa Lemak dengan Penambahan Whey Protein Concentrate dan Gum Xanthan

2018 ◽  
Vol 38 (2) ◽  
pp. 178
Author(s):  
Mohamad Djali ◽  
Syamsul Huda ◽  
Lovita Andriani
Keyword(s):  
Whey Protein ◽  
Block Design ◽  
Milk Powder ◽  
Skim Milk ◽  
Chemical Properties ◽  
Skim Milk Powder ◽  
Whey Protein Concentrate ◽  
Protein Concentrate ◽  
Randomized Block Design ◽  
Physical And Chemical

Non-fat yogurt exhibited weak body, poor texture, and whey separation because of reduction of fat. The separation of whey in yogurt is not desired by consumer. The aim of present study was to evaluate the effect of adding whey protein concentrate (WPC) and xanthan gum on physical, chemical and sensory properties of non-fat yogurt. Physical and chemical properties were tested using randomized block design whereas the yogurts properties during 21 days of cold storage included syneresis index and organoleptic. There were 6 treatments : A (full fat yogurt = control 1); B (skim milk + skim milk powder (SMP) 3% = control 2); C (skim milk + SMP 3% + WPC 1%); D (skim milk + SMP 3% + WPC 1,25%); E (skim milk + SMP 3% + WPC 0,5% + xanthan 0,005%); F (skim milk + SMP 3% + WPC 0,5% + xanthan 0,004%). The fat content 0,12%-0,14% of non-fat yogurt with the addition of WPC and blend of WPC-xanthan could increased firmness, cohesiveness and consistency compared to control 1 and control 2. In the organoleptic properties, non-fat yogurt with the addition of WPC and blend of WPC-xanthan were gained color, flavor, aroma, and consistency of the panelists preferred higher than control yogurt. Non-fat yogurt with only addition of WPC gained the lowest syneresis index. ABSTRAKYogurt tanpa lemak memiliki kekuatan struktur yang rendah dan rentan terjadi pemisahan whey karena berkurangnya kandungan lemak. Pemisahan whey pada yogurt tidak disukai oleh konsumen. Tujuan penelitian ini adalah untuk mengevaluasi efek penambahan whey protein concentrate (WPC) dan gum xanthan terhadap karakteristik fisik, kimia sensori yogurt tanpa lemak. Karakteristik fisik dan kimia diuji menggunakan metode RAK, sedangkan karakteristik yogurt selama penyimpanan dingin 21 hari meliputi indeks sineresis dan organoleptik. Terdapat 6 perlakuan yaitu: A (susu segar = kontrol 1); B (susu skim + skim milk powder (SMP) 3% = kontrol 2); C (susu skim + SMP 3% + WPC 1%); D (susu skim + SMP 3% + WPC 1,25%); E (susu skim + SMP 3% + WPC 0,5% + gum xanthan 0,005%); F (susu skim + SMP 3% + WPC 0,5% + gum xanthan 0,004%). Kandungan lemak 0,12%-0,14% pada yogurt tanpa lemak dengan penambahan WPC dan kombinasi WPC-gum xanthan dapat meningkatkan firmness, cohesiveness, dan konsistensi dibandingkan kontrol 1 dan kontrol 2. Secara organoleptik, yogurt tanpa lemak dengan penambahan WPC dan kombinasi WPC-gum xanthan mendapatkan tingkat kesukaan panelis lebih tinggi untuk warna, rasa, aroma, dan kekentalan dibandingkan yogurt lemak utuh tanpa perlakuan. Yogurt tanpa lemak dengan penambahan WPC saja mendapatkan indeks sineresis lebih rendah dibandingkan perlakuan lainnya.

scholarly journals Quality properties of non-fat yogurt with addition of whey protein concentrate

2007 ◽  
Vol 23 (5-6-1) ◽  
pp. 291-299 ◽  
Author(s):  
M. Sady ◽  
J. Domagała ◽  
T. Grega ◽  
D. Najgebauer-Lejko
Keyword(s):  
Whey Protein ◽  
Milk Powder ◽  
Skim Milk ◽  
Storage Period ◽  
Skim Milk Powder ◽  
Whey Protein Concentrate ◽  
Protein Concentrate ◽  
Quality Properties ◽  
Sensory Score ◽  
Ph Level

The aim of the study was investigation of quality of fat-free, settype yoghurt made at 5% (w/w) protein level with addition of skim milk powder (SMP) and whey protein concentrate (WPC) blends. The ratio SMP/WPC in used blends was: 1/0; 2/1; 1/2; 0/1. On 1st, 7th and 21st day of refrigerated storage yoghurt was analysed for sensory properties, titrable acidity, pH, free fatty acids (FFA), acetaldehyde, and diacethyl. Also enumeration of viable L. delbrueckii ssp. bulgaricus and S. thermophilus was carried out. During the whole storage period products with SMP/WPC ratio at 1/2 and 2/1 obtained the best sensory score. Addition of WPC to yoghurt significantly decreased lactic acid concentration which positively influenced its stability during shelf life. It was shown that during storage acidity of yoghurt was growing up in concern of pH level. The acetaldehyde content tended to increase significantly in the yoghurt fortified with higher proportion of WPC opposite to diacethyl level which was the lowest in yoghurt with an SMP/WPC addition at 0/1. During storage concentration of both volatile compounds were the highest on 7th day and the lowest on 21st day. The maximum concentration of FFA was stated in products with SMP/WPC ratio 1/2. During the storage period FFA content significantly increased after 7th days and had no changed during next 14 days. The total number of yoghurt bacteria during the whole storage time was up to 1010 and did not vary depending on SMP/WPC ratio. Amount of L. delbrueckii ssp. bulgaricus was about one log cycle lower than S. thermophilus in all kinds of yoghurt.

scholarly journals Viability and growth promotion of starter and probiotic bacteria in yogurt supplemented with whey protein hydrolysate during refrigerated storage

2017 ◽  
Vol 71 (0) ◽  
pp. 0-0 ◽  
Author(s):  
Anna Dąbrowska ◽  
Konrad Babij ◽  
Marek Szołtysik ◽  
Józefa Chrzanowska
Keyword(s):  
Whey Protein ◽  
Growth Promotion ◽  
Protein Hydrolysate ◽  
Milk Powder ◽  
Skim Milk ◽  
Whey Protein Concentrate ◽  
Protein Concentrate ◽  
Bifidobacterium Adolescentis ◽  
Initial Stage ◽  
Whey Protein Hydrolysate

The effect of whey protein hydrolysate (WPH) addition on growth of standard yoghurt cultures and Bifidobacterium adolescentis during co-fermentation and its viability during storage at 4ºC in yoghurts has been evaluated. WPH was obtained with the use of serine protease from Y. lipolytica yeast. Stirred probiotic yoghurts were prepared by using whole milk standardized to 16% of dry matter with the addition of either whey protein concentrate, skim milk powder (SMP), WPH-SMP (ratio 1:1), WPH. The hydrolysate increased the yoghurt culture counts at the initial stage of fermentation and significantly inhibited the decrease in population viability throughout the storage at 4ºC in comparison to the control. The post-fermentation acidification was also retarded by the addition of WPH. The hydrolysate did not increase the Bifidobacterium adolescentis counts at the initial stage. However, the WPH significantly improved its viability. After 21 days of storage, in the yogurts supplemented with WPH, the population of these bacteria oscillated around 3.04 log10 CFU/g, while in samples where SMP or whey protein concentrate was used, the bacteria were no longer detected.

scholarly journals Improvement of physicochemical and rheological properties of kombucha fermented milk products by addition of transglutaminase and whey protein concentrate

2016 ◽  
pp. 11-18 ◽  
Author(s):  
Mirela Ilicic ◽  
Spasenija Milanovic ◽  
Katarina Kanuric ◽  
Vladimir Vukic ◽  
Dajana Vukic
Keyword(s):  
Rheological Properties ◽  
Whey Protein ◽  
Skim Milk ◽  
Fermented Milk ◽  
Water Holding Capacity ◽  
Whey Protein Concentrate ◽  
Milk Product ◽  
Protein Concentrate ◽  
Water Holding

The objective of this work was to investigate the effect of addition of transglutaminase (TG-0.02%, w/w) and whey protein concentrate (WPC-0.03%, w/w), on quality of kombucha fermented milk product. Samples were prepared from pasteurized semi-skim milk (0.9%, w/w fat) and kombucha inoculum (10%, v/v). The pH values were measured during the fermentation of milk (lasted until reached 4.5). Syneresis, water holding capacity and the product texture (firmness and consistency,) were assessed after production. Rheological properties of kombucha fermented milk samples were measured during ten days of storage. The sample containing TG had the lowest syneresis (21 ml), the highest water holding capacity (62%) and the highest textural characteristics (firmness - 23.99g, consistency - 626.54gs) after production. The addition of WPC to milk improved the rheological properties, while the addition of TG improved it even to a significantly greater extent after the production and during 10 days of the storage.

scholarly journals Mutu Keju Putih Rendah Lemak Diproduksi Dengan Bahan Baku Susu Modifikasi

2016 ◽  
Vol 40 (2) ◽  
pp. 144 ◽  
Author(s):  
Abubakar Abubakar
Keyword(s):  
Whey Protein ◽  
Milk Fat ◽  
Dry Matter ◽  
Corn Oil ◽  
Skim Milk ◽  
Raw Material ◽  
Whey Protein Concentrate ◽  
Protein Concentrate ◽  
Water Emulsion ◽  
White Cheese

This research was conducted to investigate the quality of low-fat white cheese produced using raw material of modified milk. Five treatments applied were (A1) Using reduced fat (60%) milk, (A2) Using emulsion of corn oil in skim milk (replacing milk fat with corn oil), (A3) Using emulsion of corn oil in skim milk and addition of whey protein concentrate (replacing milk fat with corn oil and the addition of whey protein concentrate=WPC), (A4) Using skim milk and water emulsion oil in water, and (A5) replacing milk fat with corn oil and the addition of probiotic (Lactobacillus casei). Each treatment was replicated three times. The selected that skim milk in corn oil emulsion with the addition of probiotics, the results showed had cheese quality characteristics as follow: yield 12.94±0.16%, hardnes 48.07±10.12 g, softness 8.51±0.54 kg/s, moisture content 50.37±1.60%, ash content 7.38±1.75% (dry matter), fat content 41.06±6.07% (dry matter), protein content 37.85±3.25% (dry matter), phosphorus content 346.62±25.61 mg/100g (dry matter), calcium content 860.78±87.91 mg/100g (dry matter), white color, regular texture, not flavorfull, salty taste, soft texture, elastic, ordinary preference acceptance.

Effect of incorporation of sodium caseinate, whey protein concentrate and transglutaminase on the properties of depigmented pearl millet based gluten free pasta

LWT ◽  
2019 ◽  
Vol 103 ◽  
pp. 19-26 ◽  
Author(s):  
C.T. Manoj Kumar ◽  
Latha Sabikhi ◽  
A.K. Singh ◽  
P.N. Raju ◽  
Rajesh Kumar ◽  
...  
Keyword(s):  
Whey Protein ◽  
Pearl Millet ◽  
Sodium Caseinate ◽  
Whey Protein Concentrate ◽  
Protein Concentrate ◽  
Gluten Free

QUALITY OF PROTEIN IN MILK REPLACERS FOR YOUNG CALVES. III. RENNET COAGULATION AND UNDENATURED WHEY PROTEIN NITROGEN CONTENT OF SKIM MILK POWDERS AND COMMERCIAL MILK REPLACERS

1976 ◽  
Vol 56 (2) ◽  
pp. 335-338
Author(s):  
D. B. EMMONS ◽  
E. E. LISTER ◽  
D. L. CAMPBELL
Keyword(s):  
Whey Protein ◽  
Milk Powder ◽  
Skim Milk ◽  
Skim Milk Powder ◽  
Plant Proteins ◽  
Protein Nitrogen ◽  
Rennet Coagulation ◽  
Powder Samples ◽  
Milk Replacers

Reconstituted commercial skim milk powder samples which produced a firm (> 30 g) rennet curd had high levels (> 4 mg N/g) of undenatured whey protein nitrogen (WPN) as measured by the modified Harland–Ashworth test. However, similar samples which also had high levels of WPN (> 6 mg N/g) had low curd firmness or failed to coagulate. Of 24 commercial samples of milk replacers, 2 formed a soft curd; the rest did not coagulate. Five had high levels of WPN (> 6 mg N/g); one sample contained 17.8 mg N/g, well above normal levels of skim milk powder. Plant proteins may have caused high WPN values and interfered with the Harland–Ashworth test. It was concluded that WPN is neither an acceptable index of rennet coagulability of milk replacers, nor a reliable index for selecting commercially produced skim milk powders with good rennet coagulability.

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