Sundram Kalyana, Sambanthamurthi Ravigadevi, Tan Yew-Ai
Malaysian Palm Oil Board, P.O. Box 10620, 50720 Kuala Lumpur, Malaysia.
Asia Pac J Clin Nutr. 2003;12(3):355-62.
The palm fruit (Elaies guineensis) yields palm oil, a palmitic-oleic rich semi solid fat and the fat-soluble minor components, vitamin E (tocopherols, tocotrienols), carotenoids and phytosterols. A recent innovation has led to the recovery and concentration of water-soluble antioxidants from palm oil milling waste, characterized by its high content of phenolic acids and flavonoids. These natural ingredients pose both challenges and opportunities for the food and nutraceutical industries. Palm oil's rich content of saturated and monounsaturated fatty acids has actually been turned into an asset in view of current dietary recommendations aimed at zero trans content in solid fats such as margarine, shortenings and frying fats. Using palm oil in combination with other oils and fats facilitates the development of a new generation of fat products that can be tailored to meet most current dietary recommendations. The wide range of natural palm oil fractions, differing in their physico-chemical characteristics, the most notable of which is the carotenoid-rich red palm oil further assists this. Palm vitamin E (30% tocopherols, 70% tocotrienols) has been extensively researched for its nutritional and health properties, including antioxidant activities, cholesterol lowering, anti-cancer effects and protection against atherosclerosis. These are attributed largely to its tocotrienol content. A relatively new output from the oil palm fruit is the water-soluble phenolic-flavonoid-rich antioxidant complex. This has potent antioxidant properties coupled with beneficial effects against skin, breast and other cancers. Enabled by its water solubility, this is currently being tested for use as nutraceuticals and in cosmetics with potential benefits against skin aging. A further challenge would be to package all these palm ingredients into a single functional food for better nutrition and health.
棕榈果(油棕)可产出棕榈油,这是一种富含棕榈酸和油酸的半固体脂肪以及脂溶性微量成分,如维生素E(生育酚、生育三烯酚)、类胡萝卜素和植物甾醇。最近的一项创新成果是从棕榈油加工废料中提取并浓缩了水溶性抗氧化剂,其特点是含有高含量的酚酸和黄酮类化合物。这些天然成分给食品和营养保健品行业带来了挑战,也带来了机遇。鉴于目前针对人造黄油、起酥油和煎炸油等固体脂肪中零反式脂肪含量的饮食建议,棕榈油中丰富的饱和脂肪酸和单不饱和脂肪酸实际上已成为一项优势。将棕榈油与其他油脂混合使用,有助于开发新一代的脂肪产品,以满足当前大多数饮食建议。棕榈油有多种不同理化特性的天然组分,其中最显著的是富含类胡萝卜素的红棕榈油,这进一步推动了上述发展。棕榈维生素E(30%为生育酚,70%为生育三烯酚)因其营养和健康特性,包括抗氧化活性、降低胆固醇、抗癌作用以及预防动脉粥样硬化等,已得到广泛研究。这些特性很大程度上归因于其生育三烯酚含量。油棕果的一种相对较新的产出物是富含水溶性酚类黄酮类的抗氧化复合物。它具有强大的抗氧化性能,对皮肤癌、乳腺癌和其他癌症有有益作用。因其水溶性,目前正在测试将其用作营养保健品以及用于化妆品中,可能对皮肤老化有潜在益处。另一个挑战是将所有这些棕榈成分包装成单一的功能性食品,以实现更好的营养和健康效果。