Malaysian Applied Biology Journal

  • Increase font size
  • Default font size
  • Decrease font size

48_04_04

E-mail Print PDF

Malays. Appl. Biol. (2019) 48(4): 33–38

 

USE OF CALCIUM CARBONATE-NANOPARTICLE-LONGKONG

PEEL EXTRACT IN EDIBLE COATING TO DELAY

LONGKONG FRUIT BROWNING


LICHANPORN, I.*, NANTACHAI, N. and TANGANURAT, P.


Faculty of Agriculture and Technology, Rajamangala University of Technology Thanyaburi,

Phathumthani 12130, Thailand

*E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it


Accepted 8 October 2019, Published online 30 November 2019


ABSTRACT

The effect of calcium carbonate (CaCO3)-nanoparticle-longkong peel extract (LPE) coating on quality and browning of longkong after harvesting were evaluated. Edible coating (carrageenan) was used as a component of 1 mM CaCO3 and 2.00 mg LPE. Longkongs were coated with 0 (control), 1 and 2% carrageenan and storing them at 13°C and 90-95% RH for 14 days. Longkong were analyzed for changes in browning pigment, L* value, pH, total phenolic content, polyphenol oxidase (PPO) and total sugar. The results showed longkong coating with 1 and 2% carrageenan (CGN) lower browning pigment, which correlated with a decrease in PPO and total phenolic content than control. However, longkong coating with 1% CGN delayed browning more than longkong coating 2% CGN during ten days of storage. While the sugar was significantly higher in control compared to 1 and 2% CGN. Longkong treated with 1 and 2% CGN showed no significantly a decrease in pH when compared to the control fruit.

Key words: Calcium carbonate, longkong peel extract, coating, browning, polyphenol oxidase

 

Latest MABJ Issue

Vol 48(4) November 2019

Coverphoto

Table of content

Latest news!

Malaysian Applied Biology is listed in the databases and indexed in Thomson Reuters Master Journal List, Myjurnal, Biosis, Zoological Records, UDLedge Life Science Index, CNKI, J-Gate and CABI.

Malaysian Applied Biology is indexed in Scopus since issue 41(1) 2012.

According to MyCite 2014 report, MABJ ranked 95 out of 142 Malaysian journals in terms of yearly impact factor.