Improvement of extraction method of coagulation active components from Moringa oleifera seed

Water Research 33 巻 15 号 3373-3378 頁 1999-10 発行
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タイトル ( eng )
Improvement of extraction method of coagulation active components from Moringa oleifera seed
作成者
Baes Aloysius U.
Okada Mitsumasa
収録物名
Water Research
33
15
開始ページ 3373
終了ページ 3378
著者キーワード
coagulation
kaolinite
low turbid water
moringa olelfera
natural coagulant
water treatment
内容記述
A new method for the extraction of the active coagulation component from Moringa oleifera seeds was developed and compared with the ordinary water extraction method (MOC–DW). In the new method, 1.0 mol l-1 solution of sodium chloride (MOC–SC) and other salts were used for extraction of the active coagulation component. Batch coagulation experiments were conducted using 500 ml of low turbid water (50 NTU). Coagulation efficiencies were evaluated based on the dosage required to remove kaolinite turbidity in water. MOC–SC showed better coagulation activity with dosages 7.4 times lower than that using MOC–DW for the removal of kaolinite turbidity. MOC–SC could effectively coagulate more than 950f the 50 NTU initial kaolin turbidity using only 4 ml l-1, while 32 ml l-1 of MOC–DW could only remove about 781023440400f the same kaolin turbidity. The improvement of coagulation efficiency by NaCl is apparently due to the salting-in mechanism in proteins wherein a salt increases protein–protein dissociations, leading to increasing protein solubility as the salt ionic strength increases. There was no difference in the coagulation efficiency observed for extracts using any of four 1:1 salts (NaCl, KNO3, KCl and NaNO3) in our study. Purification and isolation of the active component confirmed that the active component of MOC–SC was mainly protein.
NDC分類
公害・環境工学 [ 519 ]
言語
英語
資源タイプ 学術雑誌論文
出版者
Elsevier
発行日 1999-10
権利情報
Copyright (c) 1999 Elsevier Science Ltd.
出版タイプ Author’s Original(十分な品質であるとして、著者から正式な査読に提出される版)
アクセス権 オープンアクセス
収録物識別子
[ISSN] 0043-1354
[DOI] http://dx.doi.org/10.1016/S0043-1354(99)00046-9 ~の異版である