5Alvaro M. Viljoen,Ben-Erik van Wyk. A chemotaxonmic and morphological appraisal of Aloe series purpurascentes,Aloe section Angui Aloe and their hybrid, Aloe broomii[J]. Biochemical Systematics and Ecology,2001,29: 621-631.
6Alberto Esteban Carrasco,Matias Lopez Serrano, Jose Miguel Zapata, et al. Oxidation of phenolic conpounds from Aloe barbadensis by peroxidase activity:Possible involvement in defence reactions [J]. Plant Physiol. Biochem,2001,39:521- 527.
7Sakai T, Sakamoto T, Hallaert J, et al. Pectin, pectinase and protopectinase; production, properties and applications [J]. Advances in Applied Microbiplogy, 1993,39:213-294.
8Ishii S, Yokotsuka T. Susceptibility of fruit juice to enzymatic clarification by lyase and its relation to pectin in fruit juice[J]. Journal of Agricultural and Food Chemistry, 1973,21(2):269-272.
9McLellan M R, Kime R W, Lind L R. Apple juice clarification with the use of honey and pectinase [J]. J Food Sci, 1984,50(1 ) :206-208.
10T. Reynolds,A. C. Dweek. Aloe vera leaf gel : a review update[J]. Journal of Ethnopharmacology, 1999,68 : 3-37.