Johnson Noelle, Grivetti Louis E
Catholic Relief Services, c/o Burkina Faso Program 209 West Fayette Street, Baltimore, MD 21201, USA.
Int J Food Sci Nutr. 2002 Nov;53(6):489-501. doi: 10.1080/09637480220164389.
Gathering edible wild plants is widely recognized throughout rural southeast Asia for contributions to micronutrient intakes. Elderly Karen women in two northern Thailand communities (n = 32) were surveyed to determine household gathering practices and use of edible wild plants in the family diet. While all household members gathered most efforts were by women, who collected on average 1.3-3.5 times/week depending on the season. All respondents reported that local availability of wild species with culinary and medicinal value had declined in recent decades. Column chromatography and spectrophotometry were used to determine the beta-carotene content of 22 of the most commonly consumed species. Mean values ranged from 10,290 to 31 microg/100 g sample (858 to 3 microg RE/100 g); 14 species measured at least 2400 microg/100 g (300 microg RE/100 g). Most plants identified with reasonable to high quantities of beta-carotene were eaten raw, steamed for more than 20 min, or were cooked and consumed without the fat source needed to facilitate absorption. The contribution of beta-carotene from these species to Karen diet, therefore, is problematical.
在东南亚农村地区，采集可食用野生植物对微量营养素摄入的贡献得到广泛认可。对泰国北部两个社区的32名克伦族老年妇女进行了调查，以确定家庭采集习惯以及可食用野生植物在家庭饮食中的使用情况。虽然所有家庭成员都参与采集，但大部分工作由女性完成，她们根据季节平均每周采集1.3至3.5次。所有受访者都表示，近几十年来，具有烹饪和药用价值的野生植物的本地可获得性有所下降。采用柱色谱法和分光光度法测定了22种最常食用植物的β-胡萝卜素含量。平均值在10290至31微克/100克样品之间（858至3微克视黄醇当量/100克）；14种植物的含量至少为2400微克/100克（300微克视黄醇当量/100克）。大多数被鉴定出含有适量至高含量β-胡萝卜素的植物都是生吃、蒸20分钟以上，或者在烹饪时不添加促进吸收所需的脂肪来源就直接食用。因此，这些植物中的β-胡萝卜素对克伦族饮食的贡献存在问题。
