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Chemistry and Industry of Forest Products ›› 2020, Vol. 40 ›› Issue (6): 15-22.doi: 10.3969/j.issn.0253-2417.2020.06.003

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Study on Preservation Effect of Maleric Rosin Pentaerythritol on Ponkan

Haibo ZHANG1(), Jiali XU1, Shufeng YAO1, Hong GAO1,2, Shibin SHANG1,*()   

  1. 1. Institute of Chemical Industry of Forest Products, CAF; National Engineering Lab. for Biomass Chemical Utilization; Key Lab. of Chemical Engineering of Forest Products, National Forestry and Grassland Administration; Key Lab. of Biomass Energy and Material, Jiangsu Province; Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, Nanjing 210042, China
    2. Research Institute of Forestry New Technology, CAF, Beijing 100091, China
  • Received:2020-06-23 Online:2020-12-28 Published:2020-12-29
  • Contact: Shibin SHANG E-mail:shdzhanghaibo@163.com;shangsb@163.com

Abstract:

In order to explore the preservation effect of rosin-based antistaling agent on postharvest citrus fruits, maleic rosin pentaerythritol ester(MRPE) was used as main component to prepare preservative, which was coated on ponkan for preservation and compared with uncoated ponkan and ponkan coated by morpholine fatty acid salt(MFAS) at room temperature storage conditions.Relevant indexes were measured every 6 days, and the results showed that after storing for 42 days, the weight loss rate of ponkan coated by MRPE coatings was 11.39%, which was 31.39% lower than that of the blank control group; firmness of ponkan coated by MRPE coatings was 1.61 N and the changes of firmness were lower than those coated by MFAS and the blank control; meanwhile, MRPE and MFAS coatings all could effectively inhibited the changes of soluble solids content and titratable acid content and the increase of malondialdehyde content(MDA). At the same time, the activities of superoxide dismutase(SOD), peroxidase(POD) and catalase(CAT) of ponkan coated by MRPE were increased which were 9.90, 1.26 and 1.02 U/g after storing for 42 days. These results showed that the preservation effect of MRPE coating treatment was better than that of MFAS treatment, which indicated that rosin resin had a good application prospect in postharvest preservation of ponkan.

Key words: maleric rosin pentaerythritol ester, ponkan, coating, preservation

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