Elucidation of physico-chemical characteristics and mycoflora of bovine milk available in selected area of Karachi, Pakistan.

Journal of Applied Sciences and Environmental Management

HAQ, QAMAR-UL¹  BHUTTO, ABBAS¹  ARA, DARAKHSHAN¹  PERWEEN, RUBINA¹  SHAUKAT, S.SHAHID¹ 

关键词: physical characteristics;    essential elements;    toxic elements;    fungal species;   

DOI  :  

学科分类：环境科学（综合）

来源: University of Port Harcourt * Department of Pure and Industrial Chemistry

【 摘 要 】

ISO 14000 has opened the field for enhancing the awareness towards healthy environment and gives theideology of regular assessment of threshold values not only of nutrients but contaminants as well. Under this statementmicrobiological studies in terms of mycoflora followed by physical characteristics and level of some essential elements Mg, Fe,Cu and Zn, and deleterious metal Cd were analyzed in fresh milk samples (FMS) and tetra pack milk or UHT processed milksamples (PMS) available in Gulshan-e-Iqbal Town, Karachi for the residents. Samples were collected in the morning time duringwinter season. Physical parameters like pH, conductivity, density, viscosity, surface tension and refractive index were observedvery soon after sample collection. Percentage of ash and total dissolved solids (TDS) were also measured. For fungal florastudies PDA (Potato Dextrose Agar) and Sabourouds Agar were used for the fungal growth. The concentrations of metalsconsidered were estimated after wet digestion of samples using atomic absorption spectroscopy. The ranges of averageconcentration of Mg, Fe, Cu and Zn were found to be 77.120 – 141.915mg/l, 0.580 – 7.320mg/l, 0.004 – 0.070mg/l and 2.574 –4.872mg/l. The level of Cd was estimated in the samples between 0.0050 – 0.053mg/l, but was not observed in most of thesamples. Among the fungi, the highest diversity was that of Aspergillusspp. that produces aflatoxins. ©JASEM

【 授权许可】

Unknown