2 0 0 0 OA 異なる炊飯器を用いた米飯レジスタントスターチ含量の定量
米飯中のRSがヒトの栄養に及ぼす影響について検討する第一歩として,5種類の炊飯器を用いて米飯中のRS量の比較を行った。米飯のRSはパンのそれよりも高い値を示した。米飯中のRS量は炊飯器の加熱,加圧特性によって影響を受け,変化することが明らかとなった。IH式炊飯器のように高温を維持できるもの,釜肌からの加熱だけではなく,炊き上がった米飯表面にも高温スチームによる加温ができるもの,さらに加圧の場合には1.6気圧よりも1.2気圧のものでRS量が小さかった。これらの条件はまた,24時間冷蔵保存した場合にもRS量の変化が小さかった。以上のことから,炊飯器の加熱,加圧特性の違いによって,米飯中のRS量に差が生じることが明らかとなった。
1 0 0 0 タンパク質と脳の栄養 : うつ病とタンパク摂取
1 0 0 0 OA 米飯, 食パン, レトルト米飯のレジスタントスターチの定量
- 著者
- 阿曽 かずき 岩田 宏美 清水 史子 小川 睦美 Kazuki ASO Hiromi IWATA Fumiko SHIMIZU Mutsumi OGAWA
- 雑誌
- 學苑 = GAKUEN (ISSN:13480103)
- 巻号頁・発行日
- vol.818, pp.27-30, 2008-12-01
In order to examine and compare the content of resistant starch (RS) under different conditions, the amount of non-starch polysaccharides (NSP) in boiled rice (A. boiled, B. boiled and frozen and defrosted), purchased bread (A. just after purchase, B. frozen and defrosted), and retort rice (A. microwaved, B. microwaved and frozen and defrosted) were measured using the Englyst method. The results were as follows: There was no difference in the content of NSP in the boiled rice A and B. The amount of NSP content in the purchased bread A was lower than that in the purchased bread B. Therefore, we could not calculate the amount of RS. The NSP content of the retort rice B was higher than that of the retort rice A. The RS content of the retort rice was 1.0±0.8 (g/100 g). The NSP content of the purchased bread was significantly higher than that of the boiled rice and retort rice.
As a step toward detecting the role of resistant starch (RS), the effects of boiled rice or bread intake on evacuation were examined. Ten subjects aged 21-22 were fed two types of prescribed diets of 3 meals per day for 7 successive days. Each type consisted of a different staple food; boiled rice or bread. The subjects were fed the same type of meal for 7 days and the frequency and amount of evacuation was recorded by the subjects. Analyzing the data showed the following results. The estimated total fiber contained in the bread each subject consumed was 6.3 g/day, and the estimated total fiber contained in boiled rice was 1.4 g/day. That is, there was 4.5 times more total fiber in bread than in rice. The frequency and amount of the evacuation tended to increase when boiled rice was ingested compared with the period when bread was ingested. Based on these results, we suggest that the fibers in the boiled rice lead to an increase in the frequency and amount of stools as compared with the fiber found in bread. We speculate that more RS is contained in the boiled rice than in the bread.
1 0 0 0 OA 米飯, 食パン, レトルト米飯のレジスタントスターチの定量
In order to examine and compare the content of resistant starch (RS) under different conditions, the amount of non-starch polysaccharides (NSP) in boiled rice (A. boiled, B. boiled and frozen and defrosted), purchased bread (A. just after purchase, B. frozen and defrosted), and retort rice (A. microwaved, B. microwaved and frozen and defrosted) were measured using the Englyst method. The results were as follows: There was no difference in the content of NSP in the boiled rice A and B. The amount of NSP content in the purchased bread A was lower than that in the purchased bread B. Therefore, we could not calculate the amount of RS. The NSP content of the retort rice B was higher than that of the retort rice A. The RS content of the retort rice was 1.0±0.8 (g/100 g). The NSP content of the purchased bread was significantly higher than that of the boiled rice and retort rice.