Turkey is the leading country in fresh and dried apricot production and export worldwide. Moisture sorption isotherms illustrating sorption behavior of apricots can be used to estimate endpoint of drying time and safe storage moisture content for dried apricots. In this study, sorption isotherms for two apricot cultivars (Hacıhaliloğlu and Kabaaşı) at three maturation levels were developed by static gravimetric method over a range of 22.6%–84.32% RH at 25°C. Moisture sorption data were fitted to GAB, BET, Halsey, and Oswin models to estimate moisture contents of apricots. The type of cultivar, maturation level, and sulfuration had no significant effect on moisture sorption characteristics of apricots (p > .05). Best fitting GAB model exhibited a critical moisture content of 20% (wb) for dried apricots at a_w 0.65 for safe storage and drying process was suggested to be stopped when the apricots achieved moisture content of 18%–19% wb.

中文翻译：

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品种类型、成熟度和硫化对杏吸附等温线的影响

土耳其是全球新鲜杏干和杏干生产和出口的领先国家。说明杏子吸附行为的水分吸附等温线可用于估计干燥时间的终点和杏干的安全储存水分含量。在这项研究中，两个杏品种（Hacıhaliloğlu 和 Kabaaşı）在三个成熟水平下的吸附等温线是通过静态重量法在 25°C 下 22.6%–84.32% RH 的范围内开发的。水分吸附数据被拟合到 GAB、BET、Halsey 和 Oswin 模型中，以估计杏子的水分含量。品种类型、成熟度和硫化程度对杏的吸湿特性没有显着影响 ( p  > .05)。最佳拟合 GAB 模型显示出杏干的临界水分含量为 20% (wb)当杏子的水分含量达到 18%–19% wb 时，建议停止a _w 0.65 以确保安全储存和干燥过程。