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 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Changes in Characteristics of Palm Oil During Vacuum and Atmospheric Frying Conditions of Sweet Potato) ผู้เขียน: Chatlada Kusucharid,  ดร.อนุวัตร แจ้งชัด, รองศาสตราจารย์ , Porjai Thamakorn สื่อสิ่งพิมพ์:pdf AbstractThe qualities of fried palm oil used under two different sets of frying conditions with sweet potato chips were investigated. The study investigated the effect of vacuum and atmospheric pressure on the total polar compounds (TPC), viscosity, color, acid value and peroxide value of the oil samples. The oil qualities after vacuum frying were studied for 8 h d-1 for eight consecutive days. The results showed that the TPC reached 12.75%. Viscosity was in the range of 71.13-72.13 cP and the acid value was 0.46 mg KOH/g. The peroxide value gradually increased over the first 4 d and then decreased. The L* value decreased with longer frying time, while a* and b* values increased. The oil qualities of atmospheric frying for 8 h d-1 for six consecutive days revealed a high percentage of TPC (25.25%); viscosity also increased to 92.35 cP. The acid value was at 1.23 mg KOH/g and the peroxide value increased in the first three days, then decreased. The L* value decreased, while a* and b* values were higher on the first day of frying and leveled off afterward. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Optimization of Vacuum Frying Condition for Shallot) ผู้เขียน:ดร.นันทวัน เทอดไทย, รองศาสตราจารย์ , Phaisan Wuttijumnong,, ดร.อนุวัตร แจ้งชัด, รองศาสตราจารย์, Chatlada Kusucharid สื่อสิ่งพิมพ์:pdf AbstractNowadays, healthy food has become more popular. This research was aimed to develop fried snack from shallot which is also good for human health. Normally fried snack is tasteful, but not healthy. This was due to high fat content. To reduce fat content from frying process, vacuum frying was used in this research. Using the central composite design, experiments were conducted at 550 -700 mm Hg of vacuum, 85-120?C and 5-25 minutes. From the obtained experimental data, empirical models were established to express the relationship between process parameters (including vacuum level, frying temperature and time) and product quality. Based on the models developed, the frying conditions were optimized using least square criterion. To minimize fat content of fried snack, shallot should be fried under vacuum 551 mm Hg and 108?C for 13 minutes. The optimal vacuum frying condition was conducted to compare with the deep fat frying. The result showed the improvement of product color as well as a decrease in fat content in the finished product. After 7 continuous vacuum frying processes, a slight change in acid value for the oil was found. Therefore, the optimal vacuum frying condition could be applied to produce fried snack from shallot. |
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Researcherดร. อนุวัตร แจ้งชัด, รองศาสตราจารย์ที่ทำงาน:ภาควิชาพัฒนาผลิตภัณฑ์ คณะอุตสาหกรรมเกษตร สาขาที่สนใจ:การพัฒนาผลิตภัณฑ์ผักและผลไม้แผ่น, การพัฒนาไบโอพอลิเมอร์ฟิล์ม สารเคลือบ และการประยุกต์ใช้, การวางแผนการทดลองและการใช้เทคนิคทางสถิติในงานพัฒนาผลิตภัณฑ์, การพัฒนาผลิตภัณฑ์อาหารและมิใช่อาหาร Resume |