主题：榴莲记事 -- 三弦

榴莲是进化史上很原始的水果。

22种酯类臭酯，stench esters，特殊的水果味道，

酮类，ketone, 去指甲油溶液里有，运动过量后或者糖尿病人的小便味。

14种硫化物，硫醇，thiols, 臭鼬的武器，

Sulfur-Containing Volatiles of Durian Fruits (Durio zibethinus Murr.)

Hugo Weenen,* Wim E. Koolhaas, and Anton Apriyantono

Quest International, 28 Huizerstraatweg, 1411 GP Naarden, The Netherlands, and Department of Food Technology and Human Nutrition, Bogor Agricultural University, Kampus IPB Darmaga, P.O. Box 220, Bogor 16002, Indonesia

Received for review March 26, 1996. Revised manuscript received June 24, 1996. Accepted July 19, 1996.

Abstract:

The fruits of three varieties of Indonesian durian have been analyzed by GC-MS and flavor dilution analysis. Twenty-four of the 43 peaks that contributed to the flavor of the 5× diluted extract, as detected by sniff-GC, had a sulfury note. Upon diluting the original extract 50 times, 11 components of the 17 which could still be detected by sniff-GC had a sulfury note, 3 of which were especially strong. One of the three strongest durian odorants was identified, based on Kovats index, MS, and odor description, as 3,5-dimethyl-1,2,4-trithiolane. Ethyl 2-methylbutanoate was found to have the highest odor impact among the non-sulfurous odorants in durian.

Keywords: Durian; tropical fruit; aroma dilution analysis; fruit flavor; S-ethyl thioacetate; 3,5-dimethyl-1,2,4-trithiolane