Venter F S, Thiel P G
Programme on Mycotoxins and Experimental Carcinogenesis, Medical Research Council, Tygerberg, W. Cape.
S Afr Med J. 1995 Apr;85(4):250-2.
The importation of dry red kidney beans (a variety of the species Phaseolus vulgaris) for cultivation or consumption in South Africa is prohibited because of their potential toxicity to humans. It has been established that the haemagglutinating lectins (e.g. phytohaemagglutinin (PHA)) in kidney beans are responsible for this toxicity. Dry bean varieties available on the South African market for human consumption as well as locally produced (for this study) and imported dry red kidney beans and imported canned red kidney beans were compared. The PHA activity and the effect of heat thereon were measured, before and after overnight soaking. The PHA activity in extracts of uncooked and incompletely cooked red kidney beans was not higher than the levels measured in 50% of the other bean varieties included in the study. These findings indicate that the toxic potentials and health risks associated with red kidney beans are similar to those of other dry beans already commercially available to South Africans.
由于对人类具有潜在毒性，南非禁止进口用于种植或食用的干红豆（菜豆属的一个品种）。已确定菜豆中的血凝素（如植物血凝素（PHA））是造成这种毒性的原因。对南非市场上供人类食用的干豆品种、本地生产的（用于本研究）以及进口的干红豆和进口罐装红豆进行了比较。在过夜浸泡前后，测量了PHA活性及其受热影响。未煮熟和未完全煮熟的红豆提取物中的PHA活性不高于研究中所包含的其他50%豆品种所测得的水平。这些发现表明，与红豆相关的潜在毒性和健康风险与南非人已可在市场上买到的其他干豆类似。
