Dung Nguyen Chi, Giau Tran Ngoc, Van Hao Hong, Minh Vo Quang, Thuy Nguyen Minh
Institute of Food and Biotechnology, Can Tho University, Can Tho 900000, Viet Nam.
College of Environment and Natural Resources, Can Tho University, Can Tho 900000, Viet Nam.
Food Chem X. 2024 Nov 30;24:102060. doi: 10.1016/j.fochx.2024.102060. eCollection 2024 Dec 30.
This study analyzed the nutritional composition, bioactive compounds, antioxidant activities and estimated potential renal acid load (PRAL) score of orange-fleshed sweet potato (OFSP) grown in Vietnam. In addition, important functional groups of carotenoid compounds in OFSP were identified by Fourier transform infrared spectroscopy (FTIR); carotenoid pigments were detected and quantified by high-performance liquid chromatography (HPLC). The results showed that, OFSP had outstanding physicochemical characteristics, containing many nutrients, bioactive substances, minerals and fiber. The negative PRAL score (< 0 mEq/day) of OFSP indicated that this was an alkaline food. FTIR spectroscopy provides a versatile tool for food analysis, and the analysis results showed that the carotenoid composition in OFSP grown in Vietnam have contained 14 complete functional groups detected, with 14 spectral peaks spanning the wavelength range from 433.98 cm to 3288.63 cm. HPLC analysis identified the main carotenoid pigment in OFSP as β-carotene. The detailed evaluation of the physicochemical characteristics, functional groups and colorants in OFSP has shown that it is possible to use this raw material to develop different food products, playing a useful role in vitamin A deficiency management and improving the quality of human life.
本研究分析了越南种植的橙色肉甘薯（OFSP）的营养成分、生物活性化合物、抗氧化活性，并估算了潜在肾酸负荷（PRAL）得分。此外，通过傅里叶变换红外光谱（FTIR）鉴定了OFSP中类胡萝卜素化合物的重要官能团；通过高效液相色谱（HPLC）检测并定量了类胡萝卜素色素。结果表明，OFSP具有优异的理化特性，含有多种营养成分、生物活性物质、矿物质和纤维。OFSP的负PRAL得分（<0 mEq/天）表明它是一种碱性食物。FTIR光谱为食品分析提供了一种通用工具，分析结果表明，越南种植的OFSP中的类胡萝卜素成分含有14个检测到的完整官能团，有14个光谱峰，波长范围从433.98 cm到3288.63 cm。HPLC分析确定OFSP中的主要类胡萝卜素色素为β-胡萝卜素。对OFSP的理化特性、官能团和色素的详细评估表明，利用这种原材料开发不同的食品是可行的，这在维生素A缺乏管理和改善人类生活质量方面发挥了有益作用。
