Abstract:
The comparison of capsaicin extraction techniques in capsicum cultivars were conducted during May 1999 to October 2000 at Tropical Vegetable Research Center (TVRC) Kasetsart University, Kamphaengsean campus. The result showed that the highest oleoresin content was obtained form soaking technique (17.24 percent) but either extraction techniques, soxhlet, shaking, stirring or soaking, had no effect on capsaicin content. Oleoresin and capsaicin contents were tended to improve as the increases of the soaking time. Soaking from 1 hour to 3, 5 and 7 hours showed marked increases in oleoresin up to 7.3 8.1 8.37 and 8.46 percent, respectively. However, the capsaicin contents from different soaking time were similar (0.21-0.25 percent). The highest oleoresin content was obtained from acetone extraction (8.39 percent) but there were no differences in capsaicin content extracted by various solvents. The highest oleoresin contents extracted from ten cultivars were 20.32-23.75 percent in CA459 CA262 CA250 CA257 CA397 and CA303 and less than 20 percent were CA115 CA364 CA848 and CA363, respectively. While the highest capsaicin content (>0.45 percent) was in CA115 and CA250 cultivars, the moderate capsaicin content (0.20-0.28 percent) was in CA257 CA303 CA459 CA364 and CA262 and the lowest capsaicin content (less than 0.2 percent) was in CA397 CA363 and CA848, respectively.