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The defense date of the thesis is 2011-06-30
The current date is 2019-03-21
URN etd-0630111-121006 Statistics This thesis had been viewed 2495 times. Download 0 times. Author Kuang-Yuan Hsiao Author's Email Address No Public. Department Bioengineering Year 2010 Semester 2 Degree Master Type of Document Master's Thesis Language zh-TW.Big5 Chinese Page Count 30 Title Analysis of Hyaluronic Acid in the Commercial Drink and Cosmetic Products Keyword pectin hyaluronic acid glucuronic acid carbazole carbazole glucuronic acid hyaluronic acid pectin Abstract Carbazole method was employed to measure 5 cosmetics containing hyaluronic acid. Concentration of glucuronic acid in the hyaluronic acid can be measured by carbazole method. Among the 5 cosmetics, the content of hyaluronic acid are 2.27 μg/mL, 85 μg/mL, 207.76 μg/mL, 286.6 μg/mL, with one sample revealed no color reaction. We also analyzed two hyaluronic acid containing drinks, one from Japan and the other from domestic, the hyaluronic acid concentration is 2819.4 μg/mL and 1263.4 μg/mL respectively.
Carbazole method can also be used to measure pectin which contains galacturonic acid. We purchased one commercial product and analyzed the pectin content. The results suggest that pectin may be used by producer to pretend hyaluronic acid.
Advisor Committee Kow-Jen Duan - advisor
Dey-Chyi Sheu - co-chair
Tzu-Chien Cheng - co-chair
Files Date of Defense 2011-06-27 Date of Submission 2011-06-30