目的 篩選可以準(zhǔn)確描述中藥浸膏粉體吸濕過程的動(dòng)力學(xué)模型，科學(xué)量化吸濕過程，為進(jìn)一步研究通過中藥浸膏粉體改變物理性質(zhì)來控制吸濕性提供理論基礎(chǔ)。方法 選擇5種模型分別對(duì)51種代表性中藥浸膏粉體在低、中、高3種相對(duì)濕度（33%、57%、73.5%）環(huán)境下的吸濕速率曲線進(jìn)行擬合，以擬合度相關(guān)系數(shù)（R²）、殘差平方（RSS）、信息準(zhǔn)則（AIC）值為評(píng)價(jià)指標(biāo)，初步篩選擬合較優(yōu)的動(dòng)力學(xué)模型。結(jié)果 雙指數(shù)模型和威布爾模型均能較好地反映中藥浸膏粉體吸濕的動(dòng)力學(xué)過程，但雙指數(shù)模型在不同濕度條件下的適用性較威布爾模型好。結(jié)論 雙指數(shù)模型能較好地反映中藥浸膏粉體的吸濕動(dòng)力學(xué)過程。

Objective To optimize the kinetic model that could accurately describe the moisture absorption progress of Chinese materia medica (CMM) extract powder, to quantify the adsorption process scientifically and to provide the theoretical basis for the further study on controlling the hygroscopicity of CMM extract powder by changing the physical properties. Methods We chosed five models fitting the hygroscopic rate curve of fifty-one kinds of typical CMM extract powder under the low-, mid-, and high-humidity conditions, as evaluation indexes in R², RSS, and AIC values, to make the initial screening of optimum kinetic model fitting. Results Both the double exponential model and the Weibull distribution model could reflect the moisture absorption kinetics of CMM extract powder, but the double exponential model had a better adaptability than the Weibull distribution model under different humidity conditions. Conclusion The double exponential model is suitable for reflecting the moisture absorption kinetics of CMM extract powder.

江蘇省“六大人才高峰”支持計(jì)劃；江蘇省“青藍(lán)工程”科技創(chuàng)新團(tuán)隊(duì)支持計(jì)劃[蘇教師（2008）30號(hào)]；江蘇省優(yōu)勢(shì)學(xué)科建設(shè)工程資助項(xiàng)目（ysxk-2010）