Goycoolea F M, Calderón de la Barca A M, Balderrama J R, Valenzuela J R
Centro de Investigación en Alimentación y Desarrollo, A.C., Sonora, C.P., Mexico.
Int J Biol Macromol. 1997 Aug;21(1-2):29-36. doi: 10.1016/s0141-8130(97)00037-8.
A comparison between the fine structural features of exudate gum from mesquite (Prosopis spp.) indigenous to NW Mexico and commercial gum arabic from Acacia spp. was achieved by means of immunological techniques. Their functional properties were compared from the ability to form oil-in-water emulsions and encapsulate cold press orange peel essential oil by spray drying. Fine comparison of the antigenic compounds in both materials against polyclonal rabbit antibodies, showed that the carbohydrate-rich components with slow mobility of mesquite gum are closely related to the faster ones of gum arabic. Also, close identity was observed for the components in the proteic fraction of both gums. Similar tannin concentrations were found in both materials (approximately 0.43%) with only dark coloured samples bearing higher amounts (approximately 1.9%). Gum arabic retained nearly 100% of the quantity of orange peel essential oil emulsified in water before spray drying, while mesquite gum did so for 90.6% of the citrus oil. From these results it is believed that mesquite gum might be a suitable replacement of gum arabic in arid regions of the world were Prosopis trees have widespread occurrence.
通过免疫技术对墨西哥西北部本土牧豆树（牧豆树属）渗出胶与阿拉伯树胶属商业阿拉伯胶的精细结构特征进行了比较。从形成水包油乳液以及通过喷雾干燥封装冷榨橙皮精油的能力方面对它们的功能特性进行了比较。对两种材料中针对多克隆兔抗体的抗原化合物进行精细比较，结果表明，牧豆树胶中迁移率较慢的富含碳水化合物的成分与阿拉伯胶中迁移率较快的成分密切相关。此外，两种树胶蛋白质部分的成分也显示出高度一致性。两种材料中的单宁浓度相似（约0.43%），只有深色样品的单宁含量更高（约1.9%）。阿拉伯树胶在喷雾干燥前能保留近100%乳化在水中的橙皮精油量，而牧豆树胶能保留90.6%的柑橘油。基于这些结果，人们认为在牧豆树广泛分布的世界干旱地区，牧豆树胶可能是阿拉伯胶的合适替代品。
