Luận văn Study on extraction, conversion of hydroxycitric acid from leaves and fruit rinds of garcinia oblongifolia champ. ex benth and its application to produce weight-Loss products

Tóm tắt Luận văn Study on extraction, conversion of hydroxycitric acid from leaves and fruit rinds of garcinia oblongifolia champ. ex benth and its application to produce weight-Loss products: ...and technology to exploit chemical compounds in the Garcinia. These are the concerns to be considered and studied so as to make a good plan for exploiting, producing, and 10 applying the products from Garcinia in an more effective and scientific way. CHAPTER 2 – MATERIAL AND METHOD 2.1...as better than that 15 with methanol. The longer the duration of extraction was the more amount of acid we gained. The best duration of extraction was 8 hours. In case the duration of extraction was over 8 hours, the extra amount of acid was not significant. During the 8-hour extraction, t... there is a prominent area in pic 174,158, which is not displayed on the screen. 1H-NMR spectra of standard HCCa salt and created HCCa salt are displayed in figures 3.22a, 3.22b. The signal of 1H-NMR spectrum of methylene proton (Ha-5, 5’ and Hb-5, 5’) appears at 2.95 and 3.02. Pic singlet...