The influence of different heat treatments on the content and distribution of nitrogen matter from milk to sera obtained by aced coagulation of milk with glucono-δ-lactone (GDL)
Uticaj različitih termičkih tretmana na sadržaj i distribuciju azota iz mleka u mlečni serum dobijen koagulacijom mleka pomoću glukono-δ-laktona (GDL)
Апстракт
Skim milk with 9.15% DM was heat treated at 85°C/10 min, 90°C/10 min and 95°C/10 min, respectively. Untreated milk was used as control. Milk samples were coagulated by glucono-δ-lactone (GDL) at the temperature of 45°C until pH 4.60 was reached. Untreated milk had the longest time of acidification. Nitrogen matter content in sera obtained from untreated milk was 79.40 mg%. Sera samples obtained from milk heat treated at 85°C/10 min, 90°C/10 min and 95°C/10 min had 47.80 mg%, 45.00 mg% and 43.50 mg% of nitrogen matter, respectively. Distribution of nitrogen matter from untreated milk to milk sera was 12.70%, while distribution of nitrogen matter from milk heat treated at 85°C/10 min, 90°C/10 min and 95°C/10 min to sera samples, were 6.95%, 6.57% and 6.22%, respectively.
Obrano mleko sa 9.15% SM je termički tretirano na 85°C/10 min, 90°C/10 min i 95°C/10 min. Kao kontrolni uzorak korišćeno je termički netretirano mleko. Uzorci mleka su koagulisani pomoću glukono-δ-laktona (GDL) na temperaturi od 45°C do postizanja pH 4.60. Uzorci termički netretiranog mleka su unali najduže vreme acidifikacije pomoću GDL. Kod termički netretiranog mleka sadržaj azota u serumu je u proseku iznosio 79.40 mg%. Kod uzoraka mlečnog seruma dobijenih od mleka tehnički tretiranih na 85°C/10 min, 90°C/10 min i 95°C/10 min, sadržaj azota je bio znatno manji i u proseku je iznosio 47.80 mg%, 45.00 mg% i 43.50 mg%, respektivno. Distribucija azota iz mleka u mlečni serum kod uzoraka dobijenih od termički netretiranog mleka prosečno je iznosila 12.70%, a kod uzoraka dobijenih od mleka termički tretiranih na 85°C/1O min, 90°C/10 min i 95°C/10 min, iznosila je 6.95%, 6.57% i 6.22%, respektivno.
Кључне речи:
acid coagulation / GDL / nitrogen matter / distribution / heat treatmentИзвор:
Journal of Agricultural Sciences (Belgrade), 2001, 46, 2, 137-148Издавач:
- Univerzitet u Beogradu - Poljoprivredni fakultet, Beograd
Институција/група
Poljoprivredni fakultetTY - JOUR AU - Fetahagić, Safet AU - Maćej, Ognjen AU - Denin-Djurdjević, Jelena D. AU - Jovanović, Snežana PY - 2001 UR - http://aspace.agrif.bg.ac.rs/handle/123456789/291 AB - Skim milk with 9.15% DM was heat treated at 85°C/10 min, 90°C/10 min and 95°C/10 min, respectively. Untreated milk was used as control. Milk samples were coagulated by glucono-δ-lactone (GDL) at the temperature of 45°C until pH 4.60 was reached. Untreated milk had the longest time of acidification. Nitrogen matter content in sera obtained from untreated milk was 79.40 mg%. Sera samples obtained from milk heat treated at 85°C/10 min, 90°C/10 min and 95°C/10 min had 47.80 mg%, 45.00 mg% and 43.50 mg% of nitrogen matter, respectively. Distribution of nitrogen matter from untreated milk to milk sera was 12.70%, while distribution of nitrogen matter from milk heat treated at 85°C/10 min, 90°C/10 min and 95°C/10 min to sera samples, were 6.95%, 6.57% and 6.22%, respectively. AB - Obrano mleko sa 9.15% SM je termički tretirano na 85°C/10 min, 90°C/10 min i 95°C/10 min. Kao kontrolni uzorak korišćeno je termički netretirano mleko. Uzorci mleka su koagulisani pomoću glukono-δ-laktona (GDL) na temperaturi od 45°C do postizanja pH 4.60. Uzorci termički netretiranog mleka su unali najduže vreme acidifikacije pomoću GDL. Kod termički netretiranog mleka sadržaj azota u serumu je u proseku iznosio 79.40 mg%. Kod uzoraka mlečnog seruma dobijenih od mleka tehnički tretiranih na 85°C/10 min, 90°C/10 min i 95°C/10 min, sadržaj azota je bio znatno manji i u proseku je iznosio 47.80 mg%, 45.00 mg% i 43.50 mg%, respektivno. Distribucija azota iz mleka u mlečni serum kod uzoraka dobijenih od termički netretiranog mleka prosečno je iznosila 12.70%, a kod uzoraka dobijenih od mleka termički tretiranih na 85°C/1O min, 90°C/10 min i 95°C/10 min, iznosila je 6.95%, 6.57% i 6.22%, respektivno. PB - Univerzitet u Beogradu - Poljoprivredni fakultet, Beograd T2 - Journal of Agricultural Sciences (Belgrade) T1 - The influence of different heat treatments on the content and distribution of nitrogen matter from milk to sera obtained by aced coagulation of milk with glucono-δ-lactone (GDL) T1 - Uticaj različitih termičkih tretmana na sadržaj i distribuciju azota iz mleka u mlečni serum dobijen koagulacijom mleka pomoću glukono-δ-laktona (GDL) EP - 148 IS - 2 SP - 137 VL - 46 UR - https://hdl.handle.net/21.15107/rcub_agrospace_291 ER -
@article{ author = "Fetahagić, Safet and Maćej, Ognjen and Denin-Djurdjević, Jelena D. and Jovanović, Snežana", year = "2001", abstract = "Skim milk with 9.15% DM was heat treated at 85°C/10 min, 90°C/10 min and 95°C/10 min, respectively. Untreated milk was used as control. Milk samples were coagulated by glucono-δ-lactone (GDL) at the temperature of 45°C until pH 4.60 was reached. Untreated milk had the longest time of acidification. Nitrogen matter content in sera obtained from untreated milk was 79.40 mg%. Sera samples obtained from milk heat treated at 85°C/10 min, 90°C/10 min and 95°C/10 min had 47.80 mg%, 45.00 mg% and 43.50 mg% of nitrogen matter, respectively. Distribution of nitrogen matter from untreated milk to milk sera was 12.70%, while distribution of nitrogen matter from milk heat treated at 85°C/10 min, 90°C/10 min and 95°C/10 min to sera samples, were 6.95%, 6.57% and 6.22%, respectively., Obrano mleko sa 9.15% SM je termički tretirano na 85°C/10 min, 90°C/10 min i 95°C/10 min. Kao kontrolni uzorak korišćeno je termički netretirano mleko. Uzorci mleka su koagulisani pomoću glukono-δ-laktona (GDL) na temperaturi od 45°C do postizanja pH 4.60. Uzorci termički netretiranog mleka su unali najduže vreme acidifikacije pomoću GDL. Kod termički netretiranog mleka sadržaj azota u serumu je u proseku iznosio 79.40 mg%. Kod uzoraka mlečnog seruma dobijenih od mleka tehnički tretiranih na 85°C/10 min, 90°C/10 min i 95°C/10 min, sadržaj azota je bio znatno manji i u proseku je iznosio 47.80 mg%, 45.00 mg% i 43.50 mg%, respektivno. Distribucija azota iz mleka u mlečni serum kod uzoraka dobijenih od termički netretiranog mleka prosečno je iznosila 12.70%, a kod uzoraka dobijenih od mleka termički tretiranih na 85°C/1O min, 90°C/10 min i 95°C/10 min, iznosila je 6.95%, 6.57% i 6.22%, respektivno.", publisher = "Univerzitet u Beogradu - Poljoprivredni fakultet, Beograd", journal = "Journal of Agricultural Sciences (Belgrade)", title = "The influence of different heat treatments on the content and distribution of nitrogen matter from milk to sera obtained by aced coagulation of milk with glucono-δ-lactone (GDL), Uticaj različitih termičkih tretmana na sadržaj i distribuciju azota iz mleka u mlečni serum dobijen koagulacijom mleka pomoću glukono-δ-laktona (GDL)", pages = "148-137", number = "2", volume = "46", url = "https://hdl.handle.net/21.15107/rcub_agrospace_291" }
Fetahagić, S., Maćej, O., Denin-Djurdjević, J. D.,& Jovanović, S.. (2001). The influence of different heat treatments on the content and distribution of nitrogen matter from milk to sera obtained by aced coagulation of milk with glucono-δ-lactone (GDL). in Journal of Agricultural Sciences (Belgrade) Univerzitet u Beogradu - Poljoprivredni fakultet, Beograd., 46(2), 137-148. https://hdl.handle.net/21.15107/rcub_agrospace_291
Fetahagić S, Maćej O, Denin-Djurdjević JD, Jovanović S. The influence of different heat treatments on the content and distribution of nitrogen matter from milk to sera obtained by aced coagulation of milk with glucono-δ-lactone (GDL). in Journal of Agricultural Sciences (Belgrade). 2001;46(2):137-148. https://hdl.handle.net/21.15107/rcub_agrospace_291 .
Fetahagić, Safet, Maćej, Ognjen, Denin-Djurdjević, Jelena D., Jovanović, Snežana, "The influence of different heat treatments on the content and distribution of nitrogen matter from milk to sera obtained by aced coagulation of milk with glucono-δ-lactone (GDL)" in Journal of Agricultural Sciences (Belgrade), 46, no. 2 (2001):137-148, https://hdl.handle.net/21.15107/rcub_agrospace_291 .