Changes of phenolic-acids and vitamin E profiles on germinated rough rice (Oryza sativa L.) treated by high hydrostatic pressure.
This study was performed to investigate changes in the phenolic acid and vitamin E profiles of germinated rough rice following high hydrostatic pressure treatment (HPT). Rough rice was germinated at 37°C for two days and subjected to 0.1, 10, 30, 50, and 100MPa pressures for 24h. The total phenolic acid content increased from 85.37μg/g at 0.1MPa to 183.52μg/g at 100MPa. The highest gallic acid (4.29μg/g), catechin (9.55μg/g), p-coumaric acid (8.36μg/g), ferulic acid (14.99μg/g), salicylic acid (14.88μg/g), naringin (6.18μg/g), trans-cinnamic acid (45.23μg/g), and kaempferol (40.95μg/g) contents occurred in the sample treated at 100MPa after germination. The maximum vitamin E content of about 2.56 (BG) and 4.34mg/100g (AG) were achieved at 30MPa. These result suggest that a combination of HPT and germination are efficient method for enhancement of functionality in rough rice, and clarify the influence of HPT conditions on the vitamin E and phenolic acid in germination rough rice.
Dept. of Food Science and Technology, Chungbuk National University, Cheongju 361-763, Republic of Korea.
Min Young
MY
Kim
Dept. of Food Science and Technology, Chungbuk National University, Cheongju 361-763, Republic of Korea.
Sang Hoon
SH
Lee
Dept. of Food Science and Technology, Chungbuk National University, Cheongju 361-763, Republic of Korea.
Gwi Yeong
GY
Jang
Dept. of Food Science and Technology, Chungbuk National University, Cheongju 361-763, Republic of Korea.
Meishan
M
Li
Dept. of Food and Nutrition, Daejeon Health Sciences College, Daejeon 300-711, Republic of Korea.
Youn Ri
YR
Lee
Dept. of Food Science and Technology, Chungbuk National University, Cheongju 361-763, Republic of Korea.
Junsoo
J
Lee
Dept. of Food Science and Technology, Chungbuk National University, Cheongju 361-763, Republic of Korea. Electronic address: hsjeong@chungbuk.ac.kr.
Heon Sang
HS
Jeong
D018525:Germination / Q000502:physiology; D006874:Hydrostatic Pressure; D062385:Hydroxybenzoates / Q000737:chemistry* / Q000302:isolation & purification; D012275:Oryza / Q000737:chemistry*; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification; D014810:Vitamin E / Q000737:chemistry* / Q000302:isolation & purification
D062385:Hydroxybenzoates; D010936:Plant Extracts; D014810:Vitamin E; C017616:phenolic acid
Germination; High-pressure treatment; Phenolic acid; Rough rice; Vitamin E