Phytochemicals and glycemic Index analyses of domestic rice cultivars
Abstract
Oryza sativa, Asian rice, feeds about a half population worldwide. Its seeds are a nutritious food source, especially its bran (aleurone layer). It possesses
abundant phytochemicals, such as - oryzanol, tocopherols and tocotrienols. By breeding with interspecific hybridization of varieties Indica and Japonica
were employed to obtain new cultivars; many had become representatives of High-Quality Rice in Taiwan. The bioactive ingredients vary in content with
different degrees of milling conditions. It was conducted with a-10 second per milling for several lines or cultivars of the brown rice grain, until the brown
surface turning to white (as the commercial polished rice). Averagely, four layers of the bran portion could be collected and the contents of these bioactive
ingredients reached a peak in the second or the third layer. Additionally, embryos of the rice grain were also analyzed, which were divided into intact and
ground categories. Results showed that approximately 3 to 4 folds of the concentrations of those in the ground embryos were detected compared to the
intact form. Besides, 13 cultivars of brown and white rice samples were employed for the analysis of estimated glycemic index (EGI). Results showed that
the brown and white rice of the TCS10 rice cultivar (both belonged to the low GI level in the human study) were low and medium GI food, respectively. All
brown rice samples of the thirteen cultivars were evaluated as low GI rating.
知識樹分類
消費者知識庫 > 農藝類
消費者知識庫 > 農業經濟與推廣類
消費者知識庫 > 食品科學類
相關檔案下載
- 營養多彩正著時 蘆筍家族面面觀113/04/25
- 氣候異常鋒面(可能豪雨)到來,臺南區農業改良場籲請農友採取相對應防範措施113/04/25
- 苗栗農改場第293期月刊-113年5月主要作物病蟲害預測113/04/22
- 苗栗農改場第293期月刊-新竹文山國小環教科普之行-轉身幻畫現創意113/04/22
- 苗栗農改場第293期月刊-苗栗場推動產銷履歷再創佳績榮獲112年團隊成就特優獎113/04/22
- 苗栗農改場第293期月刊-選擇適栽品種 掌握栽培技術硬質玉米產量好113/04/22
- 苗栗農改場第293期月刊-葡萄氰滿素催芽大成功 百餘位農民現場見證113/04/22
- 苗栗農改場293期月刊-全國青農座談交流會 圓滿順利113/04/22
- 桃園區農情月刊---第245期-------------政策宣導~推廣調高農漁民子女獎助學金海報113/04/19
- 桃園區農情月刊---第245期-------------政策宣導~推廣補助農友購置大型小型農機113/04/19