Teh Soek Sin, Hock Ong Augustine Soon, Mah Siau Hui
Engineering and Processing Division, Malaysian Palm Oil Board.
Senior Fellow of the Academy of Sciences, MALAYSIA.
J Oleo Sci. 2017;66(11):1183-1191. doi: 10.5650/jos.ess17078.
The environmental impacts of palm oil mill effluent (POME) have been a concern due to the water pollution and greenhouse gases emissions. Thus, this study was conducted to recover the value-added products from POME source before being discharged. The samples, before (X) and after (Y) the pre-recovery system in the clarification tank were sampled and analysed and proximate analysis indicated that both samples are energy rich source of food due to high contents of fats and carbohydrates. GCMS analysis showed that the oil extracts contain predominantly palmitic, oleic, linoleic and stearic acids. Regiospecific analysis of oil extracts by quantitative C-NMR spectroscopy demonstrated that both oil extracts contain similar degree of saturation of fatty acids at sn-2 and sn-1,3 positions. The samples are rich in various phytonutrients, pro-vitamin A, vitamin E, squalene and phytosterols, thus contributing to exceptionally high total flavonoid contents and moderate antioxidant activities. Overall, samples X and Y are good alternative food sources, besides reducing the environmental impact of POME.
由于水污染和温室气体排放，棕榈油厂废水（POME）对环境的影响一直备受关注。因此，本研究旨在对POME在排放前进行增值产品回收。对澄清池中预回收系统前后的样品（分别为X和Y）进行了采样和分析，近似分析表明，由于脂肪和碳水化合物含量高，这两个样品都是富含能量的食物来源。气相色谱-质谱联用（GCMS）分析表明，油提取物主要含有棕榈酸、油酸、亚油酸和硬脂酸。通过定量碳核磁共振（C-NMR）光谱对油提取物进行区域特异性分析表明，两种油提取物在sn-2和sn-1,3位的脂肪酸饱和度相似。这些样品富含各种植物营养素、维生素A原、维生素E、角鲨烯和植物甾醇，因此总黄酮含量极高，抗氧化活性适中。总体而言，样品X和Y除了能减少POME对环境的影响外，还是很好的替代食物来源。
