摘要：This study evaluated the influence of 10% vinegar and solar drying using two solar dryers and open‐sun drying on the microbiological quality of ginger ( Zingiber officinale Roscoe) rhizome. The rhizomes were analyzed for bacterial, mold, and Salmonella populations in the raw state, which were water‐washed and soaked in 10% vinegar, and in dried form. The fungal population was isolated and identified. Fresh and dried ginger rhizome contained both bacterial and fungal population in the range of 3.0 x 10 2 ± 1.14 x 10 2 to 2,180 x 10 9 ± 70.7 x 10 9 CFU/g. The stainless steel solar dryer had fewer fungal loads among the drying methods. Aspergillus and Penicillium species of mycotoxin‐producing potential were identified. The 10% vinegar as pretreatment showed no significant difference ( p ≤ .05) in the bacterial population reduction but in the fungal population reduction. Growth of fungi in fresh and dried ginger extracts was lower compared with growth in Potato Dextrose Broth.
