کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6593113 | 1423367 | 2018 | 33 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Impacts of different drying strategies on drying characteristics, the retention of bio-active ingredient and colour changes of dried Roselle
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The drying kinetics of Roselle (Hibiscus sabdariffa L.) of variety Terengganu (UMKL-1) and the quality attribution of Roselle were studied. The experiments were conducted using four different drying methods, including solar greenhouse drying (SD), solar greenhouse with intermittent heat pump drying (SIHP), hot air drying (HA) and heat pump drying (HP). Among the four drying methods, HP achieved the highest drying rate at a range from 0.054 g H2O·(g DM)â 1·minâ 1 to 0.212 g H2O·(g DM)â 1·minâ 1 while SD had the lowest drying rate, measured at 0.042 g H2O·(g DM)â 1·minâ 1. The analysis on colour kinetics revealed that there is no significant colour loss (p > 0.05) observed from HP's dried Roselle. Greater amount of flavonoid compounds i.e. protocatechuic acid was found in SD and SIHP dried finished product whereas HP's dried Roselle contains higher percentage of catechin as compared to other drying methods.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chinese Journal of Chemical Engineering - Volume 26, Issue 2, February 2018, Pages 303-316
Journal: Chinese Journal of Chemical Engineering - Volume 26, Issue 2, February 2018, Pages 303-316
نویسندگان
Thing Chai Tham, Mei Xiang Ng, Shu Hui Gan, Lee Suan Chua, Ramlan Aziz, Luqman Chuah Abdullah, Sze Pheng Ong, Nyuk Ling Chin, Chung Lim Law,