Effect of Two Kinds of Antistaling Agent on the Pigments of Cutting Branch for Cornus alba L.

Abstract

Aims: The research was aimed to study the effects of antistaling agent on the fresh-keeping of cutting branches in order to provide the foundation on sticks-cutting preservation in production.
 Study Design: In order to analyze the function and action mechanism of antistaling agent A(3% sucrose +50mg·L-1 aluminium sulfate + 200mg·L-1 citric acid + 100mg·L-1 GA) and B (3% sucrose + 0.5% benzene propionic acid sodium), we used the Cornus alba L., as materials, observed fresh-keeping life and morphological changes, measured the fresh weight, the contents of chlorophyll, soluble sugar, red pigment and anthocyanin in cutting branchs of Cornus alba L.
 Place and Duration of Study: College of Biological Science and Technology, Shenyang Agricultural University, between February 2017 and March 2018.
 Methodology: The contents of soluble sugar, chlorophyll, anthocyanin and red pigment in stem bark were determined at 3d, 6d, 9d, 12d and 15d after treatment, respectively. The contents of chlorophyll, red pigment and anthocyanin in cutting branchs of Cornus alba L. were measured by method of spectrophotometer. The content of soluble sugar was determined by anthrone colorimetry.
 Results: The effects of antistaling agent A (3% sucrose +50mg·L-1 aluminium sulfate + 200mg·L-1 citric acid + 100mg·L-1 GA) and antistaling agent B (3% sucrose + 0.5% benzene propionic acid sodium) were tested in this paper in order to investigate their effects on contents of chlorophyll, soluble sugar, red pigment and anthocyanin in cutting branchs of Cornus alba L., which provided foundation on sticks-cutting preservation in production. Early spring sticks of Cornus alba L. were used as materials by antistaling agent A and B treatment, respectively, and sterilized water as control. Results showed that contents of chlorophyll and soluable sugar in the antistaling agent A group were higher than those in B group. And the contents of anthocyanin and red pigments in the antistaling agent B group were higher than those in A group. Above all, the antistaling agent B had better preservation effect than the antistaling agent A.
 Conclusion: The contents of chlorophyll and soluable sugar in the antistaling agent A group were higher than those in the antistaling agent B group. And the contents of anthocyanin and red pigments in the antistaling agent B group were higher than those in A group. Above all, the antistaling agent B had better preservation effect than the antistaling agent A.