TY - JOUR ID - 143180 TI - Microbiological, physical, and chemical assessment of palm oil under ginger extracts and sterilization treatment JO - DYSONA - Applied Science JA - DAS LA - en SN - AU - Oguntimehin, Monica O. AU - Adeleke, Bartholomew S. AD - Department of Biological Sciences, Olusegun Agagu University of Science and Technology, Okitipupa, Nigeria Y1 - 2022 PY - 2022 VL - 3 IS - 2 SP - 33 EP - 45 KW - Palm oil KW - Zingiber officinale KW - Oil contamination KW - Free fatty acids KW - peroxide value DO - 10.30493/das.2022.313488 N2 - This study was designed to evaluate the microbiological, physical, and chemical effects of ginger extracts and sterilization on palm oil samples sourced from markets in the Southern Senatorial District of Ondo State, Nigeria. Water and ethanol ginger extracts were used for palm oil treatment. Microbial isolation was performed by serial dilution and pour plating techniques. Pure isolates were obtained by repeated streaking. Isolates were identified based on cultural, biochemical, and morphological characterization. Biochemical parameters, such as free fatty acid, peroxide value, moisture content, impurity level, and iodine value, were determined. Sterilized palm oil had no microbial growth with low values in all evaluated parameters. The bacterial genera isolated from the palm oil samples included Pseudomonas, Bacillus, Enterococcus, Staphylococcus, and Micrococcus. The discovered fungal species included Aspergillus niger, A. flavus, Cochliobolus sp., Penicillium citrinum, P. italicum, P. chrysogenum, Geotrichum clavatum, Mucor spp., Chrysosporium tropicum, Fusarium solani, Microsporum canis, and Meyerozyma guilliermondii. These microorganisms indicated the unhygienic condition of palm oil production chain from processing to packaging and market display. Both ginger extracts and sterilization were efficient in combating oxidative rancidity of palm oil and controlling microbial growth that might alter oil quality. Therefore, adequate quality control measures of palm oil during processing and marketing and treatments will help to reduce post-production contamination and deterioration under storage conditions. UR - https://applied.dysona.org/article_143180.html L1 - https://applied.dysona.org/article_143180_300dfd301bdcf09d41dfc4981dfe58ce.pdf ER -