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ID 41492
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title alternative
Effect of Various Chemical Treatments on the Structure and In vitro Digestibility of Rice Hulls
creator
Yamatani, Yoji
Taniguchi, Kohzoh
Otani, Isao
NDC
Animal husbandry
abstract
もみ殻を飼料化する目的で,種々の化学的な処理を施した際のもみ殻の化学組成の変化および走査電顕(SEM)下の組織学的変化とIn vitroの消化率との関連を検討した。
1. ARHは生もみ殻に較べてセンイ成分の比率が低下し,熱水可溶区分も3倍近く上る。IVDMDが3倍に上るが,これはシリカの山,そして谷部もかなり破壌されて,可消化のセンイ部分が露出したためと考えられる。リグニンは残存しているが変質していると思われる。
2. NaOHで処理すると山部のシリカ層が完全に除かれてセンイ組織が露出し,IVDMDも5倍に上る。リグニンは残存しているが変質していると思われる。
3. NaOHで処理後,更にKMnO4で処理したものでは,更に山が大きく破壌され,穴も大きくなり,谷部にあるリグニンも除去されて,IVDMDは更に7倍に上る。
4. NaClO2で処理すると,谷部のリグニンが失われ,シリカが残存しているのに,IVDMDが7倍に上る。

以上の事から,もみ殻の消化の悪い原因の一つは確かにリグニンであるが,もみ殻の堅固な構造も大きな原因となっていることが明らかになった。
abstract
The low feeding value of rice hulls (RH) can be accounted for largely by its relatively high contents of silica and lignin, and also by its rigid cell wall structure. In order to overcome this defect, the effects of various chemical treatments of RH on its in vitro dry matter disappearance (IVDMD) and on scanning microscopic structure were examined.

1. Ammoniated RH: Some collapses showed everywhere on the epidermis. In spite of slight change in the contents of silica and lignin, the IVDMD increased by about 3 times that of intact control.
2. NaOH-treated RH: The silicate layer on the mountains of the epidermis completely disappeared and part of the parenchyma was exposed. The IVDMD increased by about 5 times that of intact control.
3. NaOH-KMnO4-treated RH: The silicate layer of the mountain and the lignified vascular tissue under epidermis were both destroyed. The distinct cell wall skeleton appeared and the parenchyma was exposed. The IVDMD increased markedly by about 7 times of intact control.
4. NaC102-treated RH: The lignified vascular tissue in the valley was destroyed. The IVDMD increased this time also by about 7 times that of intact control.
journal title
Journal of the Faculty of Applied Biological Science, Hiroshima University
volume
Volume 19
issue
Issue 2
start page
257
end page
264
date of issued
1980-12-25
publisher
広島大学生物生産学部
issn
0387-7647
ncid
naid
language
jpn
nii type
Departmental Bulletin Paper
HU type
Departmental Bulletin Papers
DCMI type
text
format
application/pdf
text version
publisher
department
Graduate School of Biosphere Science
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