Changes in an Ammonia-like Odor and Chondroitin Sulfate Contents of Enzymatic Hydrolysates from Longnose Skate (Rasa rhina) Cartilage as Affected by Pretreatment Methods
Choi, Joo-Hyun, Woo, Jin-Wook, Lee, Yang-Bong, Kim, Seon-Bong
언어
영어(ENG)
URL
https://www.earticle.net/Article/A78880
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원문정보
초록
영어
To reduce ammonia-like odor in chondroitin sulfate, longnose skate (Rasa rhina) cartilage was processed by washing, autoclaving, and alkali pretreatments. Content of total volatile basic nitrogen (TVB-N), index of ammonia-like odor, of raw skate cartilage without pretreatment was 254 mg/100 g, whereas those of skate cartilage pretreated with washing and autoclaving increased to 630 and 636 mg/100 g, respectively. TVB-N of skate cartilage pretreated with sodium hydroxide sharply decreased to 15 mg/l00 g at optimal condition of 0.12 M and 3.6 volume of NaOH, as determined by surface response methodology of central composite design for optimization. Alkali pretreatment resulted in 97.6% deodorizing. Washing and autoclaving pretreatments had almost no effect on the yield of chondroitin sulfate (approximately 30%), whereas decreased to 16.0% after alkali pretreatment, showing chondroitin sulfate of skate cartilage as chondroitin sulfate C.
목차
Abstract Introduction Materials and Methods Results and Discussion Acknowledgments References