基于纤维素纳米晶体乳化陈皮精油的淀粉基涂布液制备抗菌纸的研究

Study on Antibacterial Paper Prepared by Starch-based Coating Solution Based on Orange Peel Essential Oil Emulsified with Cellulose Nanocrystalline

中文关键词:  纤维素纳米晶体  陈皮精油  淀粉  涂布  抗菌纸

Key Words:cellulose nanocrystalline  orange peel essential oil  starch  coating  antimicrobial paper

中文摘要:

      以绿豆淀粉（MBS）为基质、柠檬酸为交联剂、TEMPO氧化纤维素纳米晶体（TOCN）乳化陈皮精油（OPO）制备的TOCN-OPO Pickering乳液为抗菌剂，制备淀粉基涂布液MBS/TOCN-OPO，将其涂布在原纸上制备抗菌纸，探讨了MBS/TOCN-OPO涂布量对抗菌纸强度性能和抗菌性能的影响。结果表明，相比原纸，当MBS/TOCN-OPO涂布量为9 g/m²时，抗菌纸的耐折度为从9次提升到60次，抗张指数和耐破指数分别增加了35.0%和42.1%，水蒸气透过率降低了38.6%，水接触角增加至65.42°。MBS/TOCN-OPO抗菌纸对青霉菌的抑菌效果最好，应用于包装番茄时具有较好的抗菌保鲜效果。

Abstract:

      Using mung bean starch （MBS） as the substrate and citric acid as the crosslinking agent， TEMPO oxidized cellulose nanocrystalline （TOCN） was used to emulsify orange peel essential oil （OPO）， and to prepare TOCN-OPO Pickering emulsion as the antibacterial agent， so as to further prepare starch-based coating solution MBS/TOCN-OPO. Then the antibacterial paper was prepared by coating MBS/TOCN-OPO on the original paper. The effect of MBS/TOCN-OPO coating amount on the strength and antibacterial properties of antibacterial paper was discussed. The results showed that compared with original paper， when the MBS/TOCN-OPO coating amount was 9 g/m²， the folding strength of antibacterial paper was increased from 9 to 60 times， the tensile index and burst index were increased by 35.0% and 42.1%， respectively， the water vapor transmission rate was decreased by 38.6%， and the water contact angle was increased to 65.42°. The antibacterial paper had the best antibacterial effect on penicillium. MBS/TOCN-OPO antibacterial paper had a good antibacterial fresh-keeping application effect when applied to packaging tomato.