加工製程對金針乾製品之二氧化硫殘留量及顏色的影響

The Effect of Processing Treatments on the Sulfur Dioxide Residue and Color of Dried Day-Lily Products

陳淑德(Su-Der Chen)

《宜蘭大學學報》 1期 (2003/09) Pp. 11-15

https://doi.org/10.6178/niu.2003.01.12

摘要

本研究之目的為研究配合浸漬和殺菁的前處理方式，及不同乾燥方法對金針乾製品中二氧化硫之殘留量及顏色的影響。在日曬、日曬加熱風、直接熱風及冷凍乾燥四種乾燥方法中對金針乾製品二氧化硫與顏色之影響，以冷凍乾燥之金針顏色最佳，整體而言，日曬加熱風乾燥之金針之品質為最好。在沸水、蒸氣、和微波三種殺菁處理，其中以沸水殺菁處理過之金針二氧化硫殘留量最低，但色澤不佳，儲藏三個月後，其二氧化硫殘留量均會降低，但經殺菁前處理之金針顏色均較未經殺菁者之對照組為暗褐。

關鍵字

金針 ； 二氧化硫 ； 顏色 ； 乾燥 ； 殺菁

並列摘要

The objective was to study the effects of sulfite soaking, blanching pretreatments and drying methods on sulfur dioxide residue and color of dried day-lily products. The results showed that the four drying processes (sun drying, sun drying with hot air drying, hot air drying and freeze drying) led to appreciably different results, where the freeze-dried day-lily was with the best color, but overall the one dried by sun with hot air was with the best quality. Comparing the results from the three blanching methods (boiling water, steam and microwave), the boiling water blanched day-lily was with the lowest sulfur dioxide residue, but with dark brown color. After three-month storage, the residue of sulfur dioxide of the dried day-lily products were significantly reduced; moreover, the color of dried day-lily pretreated by blanching became much darker than the control without any pretreatment.

並列關鍵字

day-lily ； sulfur dioxide ； color ； drying ； blanching