School of Energy and Environment, City University of Hong Kong, Hong Kong.
PepsiCo Global R&D - Sustainable Beverage Packaging, 3 Skyline Drive, Hawthorne, NY 10532, United States.
Bioresour Technol. 2018 May;255:67-75. doi: 10.1016/j.biortech.2018.01.077. Epub 2018 Jan 31.
Valorisation of mixed food and beverage (F&B) waste was studied for the recovery of sugars via saccharification. Glucoamylase and sucrase were employed to hydrolyse the starch and sucrose present in the mixed F&B waste because of the high cost-effectiveness for such recovery. The Michaelis-Menten kinetics model suggests that preservatives and additives in beverages did not inhibit glucoamylase and sucrase during saccharification. High levels of glucose (228.1 g L) and fructose (55.7 g L) were efficiently produced within 12 h at a solid-to-liquid ratio of 37.5% (w/v) in 2.5 L bioreactors. An overall conversion yield of 0.17 g sugars per g of mixed F&B waste was obtained in mass balance analysis. Lastly, possible industrial applications of the sugar-rich hydrolysate and by-products are discussed. This study is believed to cast insights into F&B waste recycling via biotechnology to produce high-value added products to promote the establishment of a circular bio-economy.
混合食品和饮料（F&B）废物的增值研究旨在通过糖化作用回收糖。由于这种回收方法具有成本效益高的特点，因此使用了糖化酶和蔗糖酶来水解混合 F&B 废物中的淀粉和蔗糖。米氏动力学模型表明，饮料中的防腐剂和添加剂在糖化过程中不会抑制糖化酶和蔗糖酶。在 2.5 L 生物反应器中，在固液比为 37.5%（w/v）、12 h 内，高效地生产出 228.1 g/L 的葡萄糖和 55.7 g/L 的果糖。在质量平衡分析中，获得了 0.17 g 糖/g 混合 F&B 废物的总转化率。最后，讨论了富含糖的水解产物和副产品的可能工业应用。这项研究有助于深入了解通过生物技术回收 F&B 废物以生产高附加值产品，以促进循环生物经济的建立。
