Miyoshi Oil & Fat Co. Ltd., Tokyo 124-8510, Japan.
Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima 739-8528, Japan.
Molecules. 2020 Nov 11;25(22):5253. doi: 10.3390/molecules25225253.
Owing to the increasing reports of the harmful effects of trans and saturated fatty acids, the demand for trans- and saturated-fatty-acid-free oil and fat products is increasing among consumers. However, it is difficult to maintain the product stability and shape retention of such oil and fat products. As a result, there is a high demand in the processed oil and fat industry to develop solutions to such problems. Herein, we used molecular compound (MC) crystals in an attempt to find alternatives to trans and saturated fatty acids. The MCs used were 1,3-dioleoyl-2-palmitoyl--glycerol (OPO) and 1,3-dipalmitoyl-2-oleoyl--glycerol (POP)-the main components of lard and palm oil, respectively. We believe that OPO and POP can be used to obtain no-trans, low-saturation, and high-oleic-acid oil and fat products. Optimal conditions for efficient MC crystallization were examined by changing the oil and fat composition under rapid cooling conditions assuming industrial cooling process by using differential scanning calorimetry and synchrotron radiation time-resolved X-ray diffraction methods. It was concluded that the increase in OPO concentration destabilized MC formation, while the increase in POP concentration stabilized it under rapid cooling conditions. As a result, it was shown that MC crystals can be efficiently obtained by reducing the degree of POP supercooling.
由于越来越多的报告表明反式和饱和脂肪酸具有有害影响，消费者对不含反式和饱和脂肪酸的油脂产品的需求正在增加。然而，保持这类油脂产品的稳定性和形状保持是很困难的。因此，在加工油脂行业中，人们对开发解决这些问题的方法有很高的需求。在这里，我们使用了分子化合物（MC）晶体来寻找替代反式和饱和脂肪酸的方法。所用的 MC 是 1,3-二油酰基-2-棕榈酰基-甘油（OPO）和 1,3-二棕榈酰基-2-油酰基-甘油（POP）——分别是猪油和棕榈油的主要成分。我们相信 OPO 和 POP 可以用于获得无反式、低饱和度和高油酸的油脂产品。通过使用差示扫描量热法和同步辐射时间分辨 X 射线衍射方法，在快速冷却条件下改变油脂组成，考察了高效 MC 结晶的最佳条件，假设这是工业冷却过程。结果表明，在快速冷却条件下，OPO 浓度的增加会破坏 MC 的形成，而 POP 浓度的增加则会使其稳定。因此，表明通过降低 POP 的过冷度可以有效地获得 MC 晶体。
