| Summary: | 碩士 === 國立嘉義大學 === 農藝學系研究所 === 97 === This study aimed to investigate (1) the best drying temperature and drying days and (2) the changes of the compositions and fatty acid of sesame seeds under different treatments. By reducing the damages caused during the rainy seasons or typhoons, the benefits of the farmers were thus to be increased. These sesame seeds, TN1, were planted in the field as spring and fall crops in 2007. Five different drying temperatures, five different drying days and three different cutting treatments were conducted to investigate the agronomic characters, compositions and fatty acid of sesame seeds after harvested. Results were summarized as follows:
As for the character of ratio of mature seeds no., ratio of mature seeds wt., and 1000 seeds wt., T5D10C1 (45℃, 10 drying days and non-cutting treatments) was found to be the best treatment. As for the compositions of sesame seeds, T4~5D8~10 and T5D8~10 (40℃or 45℃and 8~10 drying days) gained the highest percentage of crude protein and fat. If the space of drying machine and delivering belt were limited, half-cutting sesame plants were able to reserve higher crude protein and fat percentages. As for the compositions of fatty acid, the treatment of T2D2~10 (30℃ and 2~10 drying days) gained higher percentage of oleic acid (C18:1), linolenic acid (C18:3), palmitic acid (C16:0). However, T5D2~10 (45℃ and 2~10 drying days) was found to gain higher percentages of stearic acid (C18:0), linoleic acid (C18:2) and arachidic acid (C20:0).
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