Quality and safety assessment of goat milk collected from different regions of Mathura city
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Authors
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Sadhana Ojha
College of Veterinary Sciences and AH
DUVASU, Mathura
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Vikas Pathak
College of Veterinary Sciences and AH
DUVASU, Mathura
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Meena Goswami
College of Veterinary Sciences and AH
DUVASU, Mathura
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Sanjay Kumar Bharti
College of Veterinary Sciences and AH
DUVASU, Mathura
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Tanuja Singh
College of Veterinary Sciences and AH
DUVASU, Mathura
Keywords:
Goat milk, organoleptic test, adulteration, preservative, quality assessmentAbstract
The present study was carried out for quality and safety assessment of goat milk from five different regions of Mathura city viz. Holigate, Sadar, Aurangabad, Chungi and Township. The milk samples were collected from dairy shops, vendors and milk producers and evaluated on the basis of various organoleptic tests, physico-chemical properties, proximate estimation and microbiological studies following the standard procedures. Among organolpetic tests, Chungi (70%) and Township (90%) samples had clearer appearance than the other area. All sample collected from township is white in color. Regarding texture/consistency of milk, the sample procured from T having normal consistency and normal odor. The COB test was positive in 20 and 10% samples of H and S areas only. There was no significant difference in temperature, pH and titrable acidity of milk of different areas. However, the specific gravity showed significant (P<0.05) difference among milk samples from different regions. The specific gravity of S area samples was significantly (P<0.05) higher than H, C and T areas. The temperature, pH and specific gravity were lower however titrable acidity was higher than normal prescribed range in all milk samples. There was significant (P<0.05) difference for all proximate parameters except fat content. The moisture contents of H, C and T were significantly (P<0.05) higher but the SNF was lower than in S area. The protein percent of H region samples was significantly (P<0.05) lower than of other regions. The ash content of S region was significantly (P<0.05) higher than of C region, whereas total solid content of S region was significantly (P<0.05) higher than H, C and T region. The mean total solid content of A was comparable to C, H, T and S region. Although proximate parameters of goat milk deviated from normal prescribed range but all samples were negative for adulteration eg. preservatives, neutralizers and others adulterants. There was no significant difference in DMC, SPC, Coliform count and Staphylococcus count of milk samples collected from different regions however all samples had higher microbial load than the prescribed limit.References
AOAC (1990) Official Methods of Analysis. Association of Official Analytical Chemists Inc.Virginia, USA
AOAC (1995) Official Method of Analysis. 16th Edn. Association of Official Analytical Chemists, Washington, DC
APHA (1984) Compendium of Methods for Microbiological Examination of Foods. 2nd Edn. American Public Health Association, Washington
APHA (1985) Standard methods for the Examination of Dairy Products. INC 15th Ed. American Public Health Association, Washington, DC
Ayub M, Ahmad Q, Abbas M, Qazi IM, Khattak IA (2007) Composition and adulteration analysis of milk samples. Sarhad J Agric 23: 1128-1130
Bureau of Indian Standards (2015). Practical on technology of milk and milk products. AgriInfo.in@2015
De SK (1991) Outlines of Dairy Technology 1st Edition New Delhi: Oxford University. Pp 15-28
Gaddour A, Najari S, Aroum S, Abdennebi M (2013) Local goat milk valorization and dairy products characterization in the southern Tunisia arid zone. Int J Curr Microbiol App Sci 2: 318-323
Goswami M, Bharti SK, Tewari A, Sharma H, Karunakara KN , Khanam T (2017) Implication of functional ingredients of goat milk to develop functional foods. J Anim Feed Sci Technol 5: 65-72
Haenlein GFW (2004) Goat milk in human nutrition. Small Ruminant Res 51: 155-163
Haenlein GFW, Caccese R (1984) Goat milk versus cow milk. In: G.F.W. Haenlein and D.L. Ace (Eds.) Extension Goat Handbook. USDA Publ., Washington, DC, E-1, pp 1-4
Imran M, Khan H, Hassan SS, Khan R (2008) Physicochemical characteristics of various milk samples available in Pakistan. J Zhejiang Univ Sci B 9: 546-551
IS 1479 (Part II) – 1961 (Reaffirmed 1997) Methods of test for Dairy Industry -Chemical Analysis of Milk. Bureau of Indian Standards, New Delhi
Kumar S, Kumar B, Kumar R, Kumar S, Khatkar SK, Kanawjia KS (2012) Nutritional features of goat. Indian J Dairy Sci 65: 266-273
Le-Jaouen JC (1981) Milking and the Technology of Milk and Milk Products. In “Goat Production†Ed. by Gall, G. Academic. Press, London Ltd. Chap. 11: 345-377
Mahoney OF (1988) Rural Dairy Technology- Experiences in Ethiopia. ILCA manual No 4. Dairy Technology Unit. ILCA, Addis Abeba, Ethiopia
Park YW, Chukwu HI. (1989) Trace mineral concentrations in goat milk from French-Alpine and Anglo-Nubian breeds during the first 5 months of lactation. J Food Compos Anal 2:161-169
Park YW (1994) Hypo-allergenic and therapeutic significance of goat milk. Small Ruminant Res 14: 151-159
Park YW (2006) Goat milk chemistry and nutrition. In: Park,Y.W., Haenlein, G.F.W. (Eds.), Handbook of Milk of Non-bovine Mammals. Blackwell Publishing Professional, Oxford, UK/Ames, Iowa. 34-58
Perin lm, Nero la (2014) Antagonistic lactic acid bacteria isolated from goat milk and identification of a novel nisin variant Lactococcus lactis. BMC Microbiol 12: 14-36
Saad MF, Hafiz NM, Salwa AA. (2013) Microbiological quality evaluation of raw goat’s milk in egypt. Int J Bio Pharma A Sci 2: 1837-1848
Sawaya WN, Safi WJ, Al-Shahat AF, Al- Mohammad MM (1984) Chemical composition and nutritive value of goat milk. J Dairy Sci 67: 1655-1659
Tziboula-Clarke A (2003) Goat milk. In H Roginnski, J W Fuquay, P F Fox (Editors), Encyclopedia of dairy sciences, London, UK: Academic UK: Woodhead Publishing Ltd 2: 1270-1279
Vargas M, Chafer M, Albors A, Chiralt A, Gonzalez-Martinez C (2008) Physicochemical and sensory characteristics of yogurt produced from mixtures of cows and goats milk. Int Dairy J 18: 1146 1152
Wasiksiri TS, Chethanond U, Pongprayoon S, Srimai S, Nasae B. (2010) Quality aspects of raw goat milk in Lower Southern Thailand. Songklanakarin J Sci Technol 32: 109-113
