{"product_id":"bakers-yeast-ethanol-vinegar-citric-acid-and-a-amylase-from-dates-von-acourene-said","title":"Baker's yeast, Ethanol, Vinegar, Citric acid and ¿-amylase from dates","description":"\u003cp\u003eThe aim of this study is to optimize the production of Baker¿s yeast, vinegar, Citric acid, Ethanol and ¿-amylase using dates of low commercial value as the basal fermentation medium. The results of this study showed that the optimal Baker¿s yeast production was obtained with a dilution rate of 0.22 h-1. As for the Ethanol production, the optimum yield obtained was 131.0 g\/L under optimum conditions of an incubation period of 72 h, inocula content of 4 % (w\/v), sugars content of 180.0 g\/L and ammonium phosphate content of  1.0 g\/L. As for the acetic fermentation, under optimal conditions, temperature of 30 °C, an initial acidity of 1.2 % and an aeration of 2VVM, the productivity of vinegar obtained is 0.0476 g\/100 ml\/h. Also, the obtained results show that it is possible to obtain by continuous fermentation each 36 h, the vinegar with an acidity ranging between 72.0 to 85.0 g\/L. Concerning the Citric acid production, the cumulative effect of temperature  (30 °C), methanol content (3 %), initial pH (3.5) and ammonium nitrate concentration  (2.5 g\/L) during the fermentation process of dates syrup did increase the citric acid production to 97.0 g\/L.\u003c\/p\u003e\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9783848420483\"\u003e\u003ch3\u003eUtilization of dates as substrate for the production of Baker's yeast, Ethanol, Vinegar, Citric acid and ¿-amylase\u003c\/h3\u003e\u003c\/div\u003e","brand":"Autorenwelt Shop","offers":[{"title":"Softcover - 9783848420483","offer_id":39491262546013,"sku":"9783848420483","price":49.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0622\/files\/a2d36fc1-adfd-4079-9adb-74f827d7ef69.jpg?v=1759212679","url":"https:\/\/shop.autorenwelt.de\/products\/bakers-yeast-ethanol-vinegar-citric-acid-and-a-amylase-from-dates-von-acourene-said","provider":"Autorenwelt Shop","version":"1.0","type":"link"}