本研究以異麥芽寡糖糖漿為甜味劑,利用反應曲面法探討機能性真空油炸紅蘿蔔脆片製程中,油炸前紅蘿蔔片的糖度(15~35°Brix)、油炸溫度(90~110℃)及油炸時間(20~40 min)對產品官能品質的影響及適當產製條件。結果顯示,產品之脆度及風味主要是受油炸溫度及時間的影響(p<0.01),產品之甜味、硬度、油膩度及整體喜好性主要是受油炸前紅蘿蔔片的糖度、油炸溫度及時間的影響(p<0.05)。根據官能品評的喜好性測試,產品的適當產製條件為:真空度700 mmHg,油炸前紅蘿蔔片的糖度為25°Brix,油炸溫度為103~109℃,油炸時間為32.4~38.9 min。
Isomaltooligosaccharides (IMO) syrup was used as sweetener for manufacturing functional vacuumfried carrot chips. Response surface methodology was used to determine how °Brix of carrot slice before frying (15~35°Brix), frying temperature (90~110 ) and frying time (20~40min) affect sensory qualities and to study the optimum processing conditions for product. The results showed that the crispness and flavor of product was affected by frying temperature and time (p<0.01). The sweetness, hardness, greasiness and overall liking of product was affected by °Brix of carrot slice before frying, frying temperature and time (p<0.05). The optimum processing condition was 700 mmHg of vacuum, soaking the carrot slice in IMO solution to reach 25°Brix, and frying at 103~109℃ for 32.4~38.9 min.