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Thermo-physical and nutritional changes of dehulled yellow peas during infrared processing (micronization).

机译:去皮的黄豌豆在红外处理(微粉化)过程中的热物理和营养变化。

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摘要

Infrared processing, or micronization, is an innovative cooking technique that has many benefits and advantages. Micronization is an energy efficient method that converts almost all of the input power into usable radiation. Infrared radiation has the capability for localized heating of a product which results in quick and uniform cooking. During the heating process, the product undergoes physical changes which increase its nutritional value in addition to enhancing its flavor. Micronization has the potential to increase the marketability of hard-to-cook pulse crops by decreasing their required cooking time and creating an instant product.;Experiments were performed with a stationary infrared micronizer to determine the optimum heat intensity required to process dehulled yellow peas in terms of short processing time and promoting high nutrition. A 23.2 kW/m2 heat intensity at the kernel surface required 60 s of processing time to reach 140°C while 16.8 kW/m2 required 80 s. Both of these heat treatments increased dry matter digestibility of the peas by 63.0%; increased the amount of available digestible protein by 7%; and required 93% less enthalpy to gelatinize the remaining starch. A moveable multi-lamp micronizer was designed and fabricated based on these results. Although the heat intensity at the pea surface was 23.0 kW/m2, the maximum average processing temperature was only 105°C. The temperatures inside the kernels were, however, maintained above 95°C for 45 to 130 s depending on their position relative to the lamp, i.e. the length of time the kernels were maintained above 95°C increased with distance from the infrared lamp's initial starting point. To that end, infrared processing is an effective means of processing peas for increased digestibility and decreased cooking time.
机译:红外处理或微粉化是一种创新的烹饪技术,具有许多优点和优点。微粉化是一种节能的方法,可以将几乎所有的输入功率转换为可用的辐射。红外辐射具有对产品进行局部加热的能力,从而可以快速均匀地进行烹饪。在加热过程中,产品会发生物理变化,除了增强其风味外,还可以增加营养价值。微粉化有可能通过减少所需的烹饪时间并生产即食产品来增加难于烹制的豆类作物的市场销售能力。用固定式红外微粉机进行实验,以确定加工去皮的黄豌豆所需的最佳热强度。加工时间短,促进高营养。籽粒表面23.2 kW / m2的热强度需要60 s的处理时间才能达到140°C,而16.8 kW / m2的处理时间则需要80 s。这两种热处理均使豌豆的干物质消化率提高了63.0%。使可消化蛋白质的可用量增加了7%;并且使糊化剩余淀粉所需的焓降低了93%。基于这些结果,设计并制造了可移动的多灯微粉机。尽管豌豆表面的热强度为23.0 kW / m2,但最大平均加工温度仅为105°C。然而,根据籽粒相对于灯的位置,将籽粒内部的温度保持在95°C以上45至130 s,即,籽粒保持在95°C以上的时间长度随距红外灯初始启动的距离而增加点。为此,红外线处理是加工豌豆以提高消化率和减少烹饪时间的有效手段。

著录项

  • 作者

    Wray, Sharon Leanne.;

  • 作者单位

    University of Manitoba (Canada).;

  • 授予单位 University of Manitoba (Canada).;
  • 学科 Agriculture Food Science and Technology.
  • 学位 M.Sc.
  • 年度 2000
  • 页码 102 p.
  • 总页数 102
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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