中国农业科学 ›› 2025, Vol. 58 ›› Issue (17): 3531-3543.doi: 10.3864/j.issn.0578-1752.2025.17.013

• 食品科学与工程 • 上一篇    下一篇

甜玉米基质型全营养特医乳剂食品的稳定性

栗程程1,2(), 张名位2, 张雁2,*(), 刘光2, 邓媛元2, 魏振承2, 廖娜2, 王佳佳2   

  1. 1 天津科技大学食品科学与工程学院,天津 300457
    2 广东省农业科学院蚕业与农产品加工研究所/农业农村部功能食品重点实验室/广东省农产品加工重点实验室,广州 510610
  • 收稿日期:2025-01-24 接受日期:2025-04-14 出版日期:2025-09-01 发布日期:2025-09-03
  • 通信作者:
    张雁,E-mail:
  • 联系方式: 栗程程,E-mail:2471135539@qq.com。
  • 基金资助:
    广东省重点领域研发计划(2023B0202070002); 科技创新战略(农业科研主力军建设)专项(R2023PY-JG014); 深圳市科技计划(KCXFZ20230731100704006); 广东省现代农业产业技术体系创新团队建设项目(2024CXTD07)

The Stability of Sweet Corn Matrix-Based Total Nutrition Emulsion of Food for Special Medical Purposes

LI ChengCheng1,2(), ZHANG MingWei2, ZHANG Yan2,*(), LIU Guang2, DENG YuanYuan2, WEI ZhenCheng2, LIAO Na2, WANG JiaJia2   

  1. 1 College of Food Science and Technology, Tianjin University of Science & Technology, Tianjin 300457
    2 Sericultural & Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences/Key Laboratory of Functional Foods, Ministry of Agriculture and Rural Affairs/Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou 510610
  • Received:2025-01-24 Accepted:2025-04-14 Published:2025-09-01 Online:2025-09-03

摘要:

【目的】分析评价不同固形物含量的甜玉米全浆对全营养特医乳剂物理稳定性和感官品质的影响,确定适宜全营养特医乳剂的甜玉米全浆浓度,研发以甜玉米全浆为基质的乳剂型特医食品,为基于农产品及天然食物的特医食品研发提供参考。【方法】分别选取3%、4%、5%、6%、7%固形物含量的甜玉米全浆为水相基质,复配麦芽糊精、酪蛋白酸钠、大豆油、维生素、矿物质,经均质、灭菌等工艺制成全营养特医乳剂,以离心沉淀率、粒径分布、微观形貌、动力学不稳定性指数(turbiscan stability index,TSI)、静态流变学特性、感官评分及电子舌信息为评价指标,并结合短期贮藏测试,研究以甜玉米全浆为基质的乳剂型全营养特医食品稳定性。【结果】随着甜玉米固形物含量增加,乳剂的离心沉淀率逐渐增大,大粒径颗粒占比增加,且粒径分布图出现多峰;光学显微镜观察微观形貌发现大颗粒片段逐渐增多,6%、7%甜玉米固形物含量的乳剂中出现轻微絮凝现象;TSI值呈先减小后增大的趋势,4%甜玉米固形物含量的乳剂TSI值最小;表观黏度逐渐增加,均呈现剪切稀化的假塑性流体特性,其中3%、4%甜玉米固形物含量的乳剂黏度小,流动性好;感官评价和电子舌分析结果表明,4%甜玉米固形物含量的乳剂评分最高、味感最好,且经21 d短期贮藏后未出现乳析和沉淀现象。【结论】综合各项评价指标,4%甜玉米固形物含量的乳剂既能保持均一稳定的体系和良好流动性,又具有浓郁的甜玉米风味,适合作为乳剂型特医食品的水相基质,既赋予特医食品天然风味,又能提高其营养素与能量水平。

关键词: 甜玉米, 全浆, 特医食品, 乳剂, 全营养, 稳定性

Abstract:

【Objective】This study aimed to analyze and evaluate the effects of sweet corn slurry with different solid content on the physical stability and sensory quality of a total nutrition emulsion of food for special medical purposes (FSMP), to determine the appropriate concentration of sweet corn slurry for such a product, and to develop a sweet corn slurry-based emulsion-type FSMP product, thus providing a reference for the research and development of FSMP products formulated from agricultural products and natural ingredients.【Method】Sweet corn slurries with solid content of 3%, 4%, 5%, 6%, and 7% were respectively used as the aqueous phase matrix, and compounded with maltodextrin, sodium caseinate, soybean oil, vitamins, and minerals, followed by homogenization and sterilization to obtain a total nutrition FSMP emulsion. The stability of this emulsion-type FSMP was assessed in terms of such evaluation indexes as centrifugal sedimentation rate, particle size distribution, microscopic morphology, turbiscan stability index (TSI), steady-shear rheological properties, sensory scores and electronic tongue information, combined with short-term storage tests.【Result】With the increase in solid content in sweet corn slurries, the centrifugal sedimentation rate of the emulsion gradually increased, which accompanied by a higher proportion of large particles and the appearance of multiple peaks in the particle size distribution. Microscopic observations revealed an increasing number of large particle fragments, with slight flocculation in the emulsions prepared with slurries with 6% and 7% sweet corn solid content. The TSI values decreased initially and then increased, reaching a minimum at a sweet corn solid content of 4%. Apparent viscosity increased with the solid content, showing a shear-thinning pseudoplastic flow behavior; the emulsions prepared with slurries with 3% and 4% sweet corn solid content had relatively low viscosities and good flow properties. Sensory evaluation and electronic tongue analysis showed that the emulsion prepared with the slurry with 4% sweet corn solid content had the highest score and the best taste, and no creaming or sedimentation was observed after 21 days of short-term storage.【Conclusion】Considering all evaluation indices, the emulsion prepared with the slurry with a 4% sweet corn solid content achieved a uniform and stable system with favorable flow properties and a pronounced sweet corn flavor, making it suitable as the aqueous phase matric for an emulsion-type FSMP. The use of this emulsion could not only endow FSMP products with a natural flavor but also improve the nutrition and energy levels of the products.

Key words: sweet corn, whole slurry, FSMP, emulsion, total nutrition, stability