| 庄志雄 1,2，张 雁 2，刘 光 2，李 雁 1，陈 华 1，祝子穰 1，汤晓捷 1.喷雾干燥甜玉米营养糊粉关键辅料筛选及配方优化[J].广东农业科学,2023,50(5):141-155 |
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喷雾干燥甜玉米营养糊粉关键辅料筛选及配方优化 |
| Selection of Key Excipients and Optimization of Formula for Spray-dried Sweet Corn Nutritional Paste |
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| DOI：10.16768/j.issn.1004-874X.2023.05.016 |
| 中文关键词: 甜玉米营养糊粉 喷雾干燥 冲调性 类胡萝卜素 配方优化 |
| 英文关键词: sweet corn nutritional paste spray drying dissolving ability carotenoids formulation optimization |
| 基金项目:广东省现代农业产业技术体系项目（2023KJ135，2023KJ117）；广东省本土创新创业团队项目（2019BT02N112）；广东省财政厅专项（粤财农〔2022〕167 号） |
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| 中文摘要: |
| 【目的】通过分析不同种类食品辅料对喷雾干燥制备甜玉米营养糊粉冲调性和类胡萝卜素稳定性的影响，筛选有利于提高其冲调性和类胡萝卜素稳定性的关键辅料，为生产高品质喷雾干燥甜玉米营养糊粉提供参考。【方法】以水溶性指数（Water Solubility Index，WSI）、分散时间、结块率以及叶黄素和玉米黄素总含量为评价指标，通过单因素试验筛选出可提高甜玉米营养糊粉冲调性和类胡萝卜素稳定性的关键辅 料，以WSI、类胡萝卜素（以叶黄素和玉米黄素总量计）含量作为评价指标，使用响应面法对甜玉米营养糊粉匀浆配方的制备进行优化，并经过实际应用对最佳配方进行验证。【结果】麦芽糊精、蔗糖、低聚果糖等辅料可显著提高甜玉米营养糊粉冲调性和类胡萝卜素稳定性，确定为关键辅料；响应面法优化得到的喷雾干燥制备甜玉米营养糊粉最优匀浆配方为：甜玉米干基为基准计算，麦芽糊精 25%、低聚果糖 1%、蔗糖 12%，经实际应用验证，此配方制得的喷雾干燥甜玉米糊粉 WSI 为 70.67（±1.24）%、叶黄素和玉米黄素总含量为 152.12（±1.30）µg/g（干
重），分别比未添加辅料的甜玉米全粉提高 34.84% 和 11.37%。【结论】与蛋白质、脂类辅料相比，麦芽糊精、蔗糖、低聚果糖等糖类辅料可显著提高甜玉米营养糊粉冲调性和类胡萝卜素稳定性，可用作喷雾干燥制备甜玉米营养糊粉的关键辅料。该研究为生产高品质喷雾干燥甜玉米营养糊粉提供一种可行的配方方案，能有效改善甜玉米营养糊粉的冲调性并提高类胡萝卜素稳定性。 |
| 英文摘要: |
| 【Objective】In order to analyze the effects of different types of food excipients on the dissolving ability and main carotenoid content of spray-dried sweet corn nutritional paste, and to screen the key excipients that are beneficial to improving the dissolving ability and carotenoid stability of spray-dried sweet corn nutritional paste, so as to provide a reference to producing high-quality spray-dried sweet corn nutritional paste. 【Method】The water solubility index (WSI), dispersal time, caking rate, total content of lutein and zeaxanthin were used as evaluation indicators to select key additives for improving the dissolving ability and carotenoid stability of sweet corn paste by single-factor experiments. WSI, carotenoid (total lutein and zeaxanthin) content were used as evaluation indicators to optimize the slurry formula for preparing spray-dried sweet corn paste by response surface methodology. And practical applications verified the optimized formula.【Result】The additives such as maltodextrin, sucrose, and fructooligosaccharide which could significantly improve the dispersibility and carotenoids stability were defined as key excipients for spray-dried sweet corn paste. The optimal homogenate formula for preparation of sweet corn nutritional paste by spray drying obtained by response surface optimization was as follows: 25% maltodextrin, 1% fructooligosaccharide and 12% sucrose, calculated based on sweet corn dry base. Verification experiments of the the optimized slurry formula showed that the WSI of the spray-dried sweet corn flour was 70.67 (±1.24)%, and the total lutein and zeaxanthin content was 152.12 (±1.30) µg/g (dry weight). Compared with sweet corn flour without additives, the WSI increased by 34.84%, and the total lutein and zeaxanthin content increased by 11.37%.【Conclusion】Compared with protein and lipid, carbohydrate such as maltodextrin, sucrose, and fructooligosaccharide could significantly improve the dissolving ability and carotenoids stability of sweet corn paste and therefore could be used as key excipients for the preparation of sweet corn nutritional paste by spray drying..This study provided a feasible formulating way for producing high-quality sweet corn nutritional paste by spray drying, which could effectively improve the dissolving ability and the stability of carotenoids. |
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