Department of Chemistry, Loyola College, Chennai 600 034, Tamil Nadu, India.
Department of Chemical Engineering, Yeungnam University, Gyeongbuk 38541, Republic of Korea.
Bioresour Technol. 2024 Oct;409:131200. doi: 10.1016/j.biortech.2024.131200. Epub 2024 Aug 2.
The majority of the waste produced by the food and agriculture industries is abundant in proteins, carbohydrates, and fats, which can be utilized effectively in other food products or industrial products. Especially, washed rice water (WRW) contains a significant quantity of starch that has been discarded without being utilized properly. In the present investigation, we have successfully upgraded washed rice water into the industrially important intermediate, i.e., gluconic acid, using an Au/MgO catalyst in a single pot reaction. The upgrading strategy was developed in three consecutive phases using two different model reactions: (1) glucose to gluconic acid, (2) hydrolysis of starch into glucose, followed by the oxidation reaction. The results showed that almost 60% gluconic acid was achieved at room temperature with atmospheric pressure. The present investigation highlighted that hydrolysis, followed by oxidation reaction is the most promising route for upgrading WRW to gluconic acid.
食品和农业行业产生的废物大部分富含蛋白质、碳水化合物和脂肪，可有效用于其他食品或工业产品。特别是，淘米水（WRW）含有大量未被充分利用的淀粉。在本研究中，我们使用 Au/MgO 催化剂在一锅反应中成功地将淘米水升级为工业上重要的中间体，即葡萄糖酸。升级策略分三个连续阶段使用两种不同的模型反应进行开发：（1）葡萄糖到葡萄糖酸，（2）淀粉水解成葡萄糖，然后进行氧化反应。结果表明，在室温常压下，几乎可以达到 60%的葡萄糖酸。本研究强调，水解后氧化反应是将 WRW 升级为葡萄糖酸的最有前途的途径。
