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Study on the Quality of Market Dahi Compared to Laboratory Made Dahi  

Shekh, A.L. (Department of Dairy Science, Bangladesh Agricultural University)
Wadud, A. (Department of Dairy Science, Bangladesh Agricultural University)
Islam, M.A. (Department of Dairy Science, Bangladesh Agricultural University)
Rahman, S.M.E. (Division of Food Science and Biotechnology, Kangwon National University)
Sarkar, M.M. (Bangladesh Livestock Research Institute)
Ding, Tian (Division of Food Science and Biotechnology, Kangwon National University)
Choi, Jae-Ho (Division of Food Science and Biotechnology, Kangwon National University)
Oh, Deog-Hwan (Division of Food Science and Biotechnology, Kangwon National University)
Publication Information
Journal of Food Hygiene and Safety / v.24, no.4, 2009 , pp. 318-323 More about this Journal
Abstract
Dahi is yoghurt like fermented dairy products available in Bangladesh made by traditional ways from raw milk. The aim of the present study was to check and compare the present quality status of the market dahi in reference to laboratory made dahi. For this, dahi was prepared in the laboratory (A) and collected from Kishoregonj district (B), Gazipur district (C), Bogra district (D) and Dhaka district (E and F). Consumer acceptance quality was judged on 100 point by a judge panel and chemical and microbiological quality test were done by established methods. 'A' type dahi was superior followed by E, D, F, B and C considering the consumer acceptance quality parameter. From chemical test, it appears that, B possess the lowest pH ($3.75\;{\pm}\;0.05$) and highest was in C ($4.46\;{\pm}\;0.15$). Total solids content of F type dahi ($318.40\;{\pm}\;4.44\;g/kg$) was highest and fat ($52.00\;{\pm}\;2.00\;g/kg$), protein ($44.33\;{\pm}\;2.00\;g/kg$) and ash ($10.76\;{\pm}\;0.31\;g/kg$) content were also higher in F type dahi. E and A type dahi were also with considerable figure in chemical quality parameter. Dahi B was inferior in respect of microbiological quality- total viable count (TVC) (${\times}\;10^5\;cfu/ml$) content was $94.00\;{\pm}\;4.58$, yeast (cfu/ml) content was $183.33\;{\pm}\;15.28$ and mold (cfu/ml) content was $53.33\;{\pm}\;15.28$. The TVC (${\times}\;10^5\;cfu/ml$), yeast (cfu/ml) and mold (cfu/ml) content of A type dahi were $39.67\;{\pm}\;4.51$, $50.00\;{\pm}\;10.00$ and $20.00\;{\pm}\;10.00$, respectively. Considering all the three major quality aspects dahi A was superior than others followed by F, D, E, C and B.
Keywords
Physico-chemical; Microbial quality; dahi;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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