Authors: W J Jung J H Kuk K Y Kim R D Park
Publish Date: 2005/02/08
Volume: 67, Issue: 6, Pages: 851-854
Abstract
Lactic acid fermentation was applied to demineralize red crab shell waste using Lactobacillus paracasei subsp tolerans KCTC3074 Various concentrations 0 25 50 100 of glucose were supplemented as an initial carbon source and various amounts 25 50 100 of the bacterial culture were inoculated as a starter Microbial growth was very dependent on glucose concentration but little dependent on inoculum level The pH decreased rapidly from pH 8 to pH 6 during the first day at all three inoculum levels At day 5 of fermentation the 25 50 and 100 inoculum levels with 10 glucose supply gave pH 55 51 and 46 respectively ie a decrease in pH concomitant with an increase in the inoculum level The total titratable acidities TTA at day 5 for 25 50 and 100 inoculum levels with 10 glucose supplement were 31 45 and 83 and the relative residual ash contents were 266 259 and 190 respectively A negative relationship was found between pH and demineralization level r2=08571 but there was a positive relationship between TTA and demineralization level r2=05532
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