The Influence Of Drying Ways On Total Flavonoids Of Chinese Jujuba Mill And Preliminary Exploration For Its Function Evaluation

Jujuba Mill is a special kind of Chinese fruits. It has many kinds of nutritional ingredients. The rutin in Jujuba can improve the effect of Vc in organism. Other flavonoids will take different effects.In this thesis, the influences of four drying ways on total flavonoids of Chinese Jujuba Mill have been studied. By the HPLC, the compositions of Chinese Jujuba Mill have been analyzed. Further, the function of total flavonoids in Chinese Jujuba Mill has been evaluated tentatively.The main results are listed as follows:1. The average retrieval proportion of the rutin added in the Jujuba Mill is 99.4%. RSD=1.34%. The technological process chose in this thesis is fit for the requirement.2. In three types of macroreticular adsorbent (LSA-5, LSA-8, LSA-20), LSA-20 showed the best comprehensive absorption ability. The adsorption rate is 98.6%, the eluviations rate is 97.6%. The productivity is 96.23%.3. The content of flavonoids in fresh Chinese Jujuba Mill is 296.6mg/100g.4. For microwave drying experiment, the optimal parameters are follow conditions: power/0.245 W, time/1Omin, the weight of Jujuba Mill per decimeter square /50g. The flavonoid productivity under these parameters is 218.6mg/100g. The effect factors are sequenced: power > time > weight.5. For hot air drying, the optimal parameters showed as follows: hot air temperature / 40℃, drying time/8hour, the weight of Jujuba per decimeter square/150g. The flavonoids production under these conditions is 189.3mg/100g. The parameters are sequenced as this: time>temperature> weight.6. In vacuum cold drying experiment, the flavonoids of Jujuba Mill is reduced companied with the drying time. The regress equation is Y=300.28X-0.0272, R=0.9837.7. In natural drying experiment, the flavonoids of Jujuba Mill is reduced as line companied with the drying time. The regress equation is Y=-0.7111X+294.54, R=0.9967. 8. Compared four drying ways, the flavonoids in microwave drying is 218.6mg/100g, the last moisture content is 24.3%; 189.3mg/100g, 27.9% in hot air drying; 275.2mg/100g, 6.9% in vacuum cold drying; 261.5mg/100g, 29.7% in natural drying.9. Through HPLC test, the most composition in Jujuba Mill flavonoids is rutin. The propbrtion of flavonoids is 48%; the proportion of phenol aid is 32%; the proportion of other phenols is 20%.10. Flavonoids of Jujuba Mill will reduced the TG and TC in rat's serum and improve the HDL-C content. The high dosage Jujuba Mill flavonoids effect more significantly than single rutin.11. Flavonoids of Jujuba will significantly reduce the free radical and production of MDA. Additional, the flavonoids of Jujuba Mill can restrain the production ofin rat's bleed and liver.