...
首页> 外文期刊>Journal of food engineering >Influence of freezing rate variation on the microstructure and physicochemical properties of food emulsions
【24h】

Influence of freezing rate variation on the microstructure and physicochemical properties of food emulsions

机译:冷冻速率变化对食品乳状液微观结构和理化性质的影响

获取原文
获取原文并翻译 | 示例
           

摘要

The freezing rate used in industrial applications may vary for a number of reasons, such as changes in food mass, food composition, and freezing equipment operation. In this study, we evaluated the influence of freezing rates on the microstructure, stability and physicochemical properties of model emulsion-based sauces. Slow freezing (-0.015 ℃/min) resulted in a larger mean particle size than fast freezing (-0.11 ℃/min), which was attributed to increased fat droplet flocculation and coalescence. The influence of various additives (salt, sugar, gums) on the properties of the sauces was also investigated. The addition of 200 mmol/L NaCl promoted droplet flocculation and phase separation whereas 150 mmol/L sucrose inhibited droplet flocculation and phase separation, and inhibited ice crystal growth. The addition of 0.2% xanthan gum promoted flocculation, but inhibited phase separation and ice crystal growth. Our results are interpreted in terms of the influence of the additives on the phase behavior of water, and the colloidal interactions between the fat droplets. This study provides valuable information about the major factors, i.e., salt and sugar, and influence on the stability of emulsion-based products to freeze-thaw abuses, which has important implications for the development of high quality frozen meals.
机译:工业应用中使用的冷冻速度可能由于多种原因而变化,例如食物质量,食物组成和冷冻设备操作的变化。在这项研究中,我们评估了冷冻速率对基于乳液的调味酱的微观结构,稳定性和理化特性的影响。慢速冷冻(-0.015℃/ min)比快速冷冻(-0.11℃/ min)产生更大的平均粒径,这归因于脂肪滴的絮凝和聚结增加。还研究了各种添加剂(盐,糖,树胶)对调味料性能的影响。添加200 mmol / L NaCl促进了液滴的絮凝和相分离,而150 mmol / L的蔗糖则抑制了液滴的絮凝和相分离,并抑制了冰晶的生长。添加0.2%黄原胶会促进絮凝,但会抑制相分离和冰晶生长。我们的结果是根据添加剂对水的相行为的影响以及脂肪滴之间的胶体相互作用来解释的。这项研究提供了有关主要因素(即盐和糖)的信息,以及对乳液基产品对冻融滥用的稳定性的影响,这对高质量冷冻食品的开发具有重要意义。

著录项

  • 来源
    《Journal of food engineering》 |2013年第2期|244-253|共10页
  • 作者单位

    Department of Food Science & Technology, University of Nebraska, Lincoln, NE 68516, USA ,ConAgra Foods, Inc., Six ConAgra Drive, Omaha, NE 68102, USA;

    ConAgra Foods, Inc., Six ConAgra Drive, Omaha, NE 68102, USA;

    Department of Food Science & Technology, University of Nebraska, Lincoln, NE 68516, USA;

    Department of Food Science & Technology, University of Nebraska, Lincoln, NE 68516, USA;

    Department of Food Science & Technology, University of Nebraska, Lincoln, NE 68516, USA;

    Department of Food Science, University of Massachusetts, Amherst, MA 01002, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Dairy sauces; Emulsions; Freezing; Destabilization; Microstructure;

    机译:乳汁;乳液;冷冻;不稳定微观结构;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号