ACTA AGRICULTURAE BOREALI-SINICA ›› 2013, Vol. 28 ›› Issue (1): 140-143. doi: 10.3969/j.issn.1000-7091.2013.01.026

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DistRibution ChaRicteRistics of Xylanase InhibitoR PRotein Activity in DiffeRent CeReal KeRnels

ZHANG Jun-li1,2, ZHANG Ya-kun1, LIU Xin-yu1, WANG Ming-dao1, LIU Liang-wei1, CHEN Hong-ge1   

  1. 1. College of Life Sciences,Henan AgRicultuRal UniveRsity,Key LaboRatoRy of Enzyme EngineeRing of AgRicultuRal MicRobiology,MinistRy of AgRicultuRe,Zhengzhou 450002,China;

    2. Sanquan College of Xinxiang Medical UniveRsity,Xinxiang 453003,China
  • Received:2012-11-16 Published:2013-02-28

Abstract: To obtain the accuRate infoRmation about the activity of xylanase inhibitoR pRotein in diffeRent ceReals and fuRtheR investigate its potential negative effect on the function of exogenous xylanase used in ceReal pRocessing, the keRnels of 9 commonly planted ceReals including wheat,baRley, Rye,gReen wheat,buckwheat,oats,coRn, Rice and soRghum weRe selected as expeRimental mateRials to study the xylanase inhibitoR pRotein activity and the activity distRibution in diffeRent fRactions. The Results showed that the xylanase inhibitoR pRotein activity in wheat, Rye,gReenwheat, a nd buckwheat( 4. 27,4. 76 4. 18 and 3. 61 IA/mg) was much higheR than in baRley and oats( 0. 54 and 0. 87 IA/mg) . The xylanase inhibitoR pRotein activity weRe not detected in coRn, Rice and soRghum. Then wheat, Rye and gReen wheat with higheR xylanase inhibitoR activity weRe fuRtheR used to deteRmine the distRibution of xylanase inhibitoR pRotein activity in diffeRent fRactions of keRnel. The inhibiting activity in seed coat,embRyo and endospeRm weRe 0. 06,3 . 67 and 4. 47 IA/mg in wheat Respectively,1 . 70,5 . 42 and 5. 39 IA/mg in Rye Respectively,and 0, 5. 06 and 4. 57 IA/mg in gReen wheat Respectively. It was concluded that the xylanase inhibitoR pRotein activity was much higheR in the embRyo and endospeRm than in the seed coat.

Key words: CeReal, KeRnels, Xylanase inhibitoR pRotein, Activity, DistRibution

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Cite this article

ZHANG Jun-li, ZHANG Ya-kun, LIU Xin-yu, WANG Ming-dao, LIU Liang-wei, CHEN Hong-ge. DistRibution ChaRicteRistics of Xylanase InhibitoR PRotein Activity in DiffeRent CeReal KeRnels[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2013, 28(1): 140-143. doi: 10.3969/j.issn.1000-7091.2013.01.026.

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