Nutritional Potential of Raw and Free -Galactosides Lupin (Lupinus albus Var. multolupa) Seed Flours. Effect of Phytas
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- 作者：Jesus M. Porres ; Pilar Aranda ; Marí ; a Ló ; pez-Jurado ; and Gloria Urbano
- 刊名：Journal of Agricultural and Food Chemistry
- 出版年：2005
- 出版时间：April 20, 2005
- 年：2005
- 卷：53
- 期：8
- 页码：3088 - 3094
- 全文大小：84K
- 年卷期：v.53,no.8(April 20, 2005)
- ISSN：1520-5118
文摘
The effect of the removal of 
-galactosides from Lupinus albus L. var. multolupa on the chemicalcomposition of the prepared flour and the dialyzability of N, total P, Ca, Mg, Fe, Zn, and Mn wasstudied. The extraction process caused a significant increase in total and insoluble nitrogen contentsand decreased the amount of soluble protein nitrogen. However, neither these changes nor treatmentwith phytase seemed to considerably affect in vitro protein digestibility. Except for Ca and Cu, totalmineral contents were significantly reduced by the extraction process. The process also caused asignificant reduction in the dialyzability of all the minerals studied except P. The decrease in mineraldialyzability was partially counteracted by phytase treatment in amounts of 250-500 phytaseunits/kg of lupin flour. In the case of Fe, mineral dialyzability did not differ significantly between thetwo lupin flours studied with treatment with 500 phytase units/kg. Zinc dialyzability was the mostefficiently improved by phytase treatment (P < 0.0001), followed by P, Fe, and Mn, and finally by Caand Mg (P < 0.05).Keywords: Lupinus albus; -galactoside extraction; phytase; nutrient dialyzability
-galactosides from Lupinus albus L. var. multolupa on the chemicalcomposition of the prepared flour and the dialyzability of N, total P, Ca, Mg, Fe, Zn, and Mn wasstudied. The extraction process caused a significant increase in total and insoluble nitrogen contentsand decreased the amount of soluble protein nitrogen. However, neither these changes nor treatmentwith phytase seemed to considerably affect in vitro protein digestibility. Except for Ca and Cu, totalmineral contents were significantly reduced by the extraction process. The process also caused asignificant reduction in the dialyzability of all the minerals studied except P. The decrease in mineraldialyzability was partially counteracted by phytase treatment in amounts of 250-500 phytaseunits/kg of lupin flour. In the case of Fe, mineral dialyzability did not differ significantly between thetwo lupin flours studied with treatment with 500 phytase units/kg. Zinc dialyzability was the mostefficiently improved by phytase treatment (P < 0.0001), followed by P, Fe, and Mn, and finally by Caand Mg (P < 0.05).Keywords: Lupinus albus; -galactoside extraction; phytase; nutrient dialyzability