The influence of inhibit avoid water defect responses by heat pretreatment on hot air drying rate of spinach

The influence of inhibit avoid water defect responses by heat pretreatment on hot air drying rate of spinach
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热预处理抑制避免水缺陷反应对菠菜热风干燥速率的影响

DOI:
10.1016/j.jfoodeng.2015.07.014
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发表时间:
2016
影响因子:
5.5
通讯作者:
Akio Tagawa
Akio Tagawa
中科院分区:
农林科学1区
文献类型:
--
作者:
Takashi Watanabe;Takahiro Orikasa;Hiroshi Shono;Shoji Koide;Takeo Shiina;Akio Tagawa

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本研究的目的是提出一种新的干燥技术,提高干燥速率的菠菜叶片的生理活动的变化(特别是,避免水分亏缺)与热预处理。测定了菠菜的生理活性(细胞膜稳定性(CMS)作为细胞膜生物反应的指标,可变荧光与最大荧光的比值(Fv/Fm)作为生命活动的指标)和干燥特性(含水率和表面积)。通过对Cole-Cole图圆弧顶端坐标的变化,评价了预处理后样品的CMS。干燥样品的表面积比与Fv/Fm比之间存在显著相关性(P< 0.01)。结果表明,热预处理降低了菠菜的生理活性,是提高菠菜热风干燥速率的因素之一。
The objective of this research is to propose a new drying technique for increasing drying rate of spinach blades by changes in physiological activity (particularly, avoid water deficits) with heat pretreatment. The physiological activities (cell membrane stability (CMS) as an index of the biological reactions of the cell membrane, and ratio of variable fluorescence to maximum fluorescence (Fv/Fm) an index of life activity) and the drying characteristics (moisture content and surface area) of the spinach were measured. The CMS of samples after pretreatment were evaluated by focused on the shift in the coordinates of the top of the circular arcs of Cole–Cole plots. The correlations between the Fv/Fm ratio and the surface area ratio of dried samples were significant (P< 0.01). We found that the decreased physiological activity of spinach with heat pretreatment is one of the factors that increase the hot air drying rate of spinach.
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