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Nisanart Naksin. Ripening retardation of Namwa banana using low-cost ethylene scavenger in hydrophobic cellulose sachet and their effects on fruit quality. Master's Degree(Engineering Technology). Thammasat University. Thammasat University Library. : Thammasat University, 2017.
Ripening retardation of Namwa banana using low-cost ethylene scavenger in hydrophobic cellulose sachet and their effects on fruit quality
Name: Nisanart Naksin
keyword:
Alkyl ketene dimer emulsion
Abstract:
The work aims to develop process for delaying the ripening of Namwa banana during the export process utilizing cold storage in combination with use of ethylene scavenger in hydrophobic sachet. Namwa banana is a common species of banana in Thailand and nearby regions. In addition to the usual problem of small farm size and lack of good agricultural management, Namwa banana has not been exported extensively due to its relatively fast ripening and short storage life which has made long-distance transport difficult. The low-cost hydrophobic and gas-permeable sachet for ethylene scavenger was developed using a simple alkyl ketene dimer (AKD) emulsion coating. Suitable protocols for delay ripening of Namwa banana is developed and tested. The ripening retardation was achieved using KMnO4-impregnated silica gel in the developed AKD-coated cellulose sachet. The prepared ethylene scavenger has the ethylene removal capacity of 257 µL/g. Banana kept under combination of vacuum packaging, low-temperature storage, and ethylene scavenger, showed the lowest physical and biochemical changes associated with ripening i.e. peel color, weight loss, pulp-to-peel ratio, firmness, titratable acidity, and total soluble solids content, as compared to control treatments without the use of ethylene scavengers nor vacuum packaging. The optimal amount of ethylene scavenger at 5 g/kg banana in combination with partial vacuum packaging and storage temperature of 13 C was found to be most effective in delaying ripening of Namwa banana during storage maximum to 21 days. The developed sachet can effectively prevent wetting of sachet and leaching of KMnO4 onto banana skin. The water contact angle changes from 40 before coating to about 146 after coating. Scanning Electron Microscope (SEM) images showed a network of cellulose fiber with a lot of microporosities still remained after AKD coating allowing for gas permeability. Fourier Transform Infrared Spectroscopy indicated efficient AKD coating on the sachet rendering it into almost a superhydrophobic surface
Thammasat University. Thammasat University Library
Address:
BANGKOK
Email:
preserv@tu.ac.th
Name: Paiboon Sreearunothai
Role:
advisor
Created:
2017
Modified:
2021-04-20
Issued:
2021-04-20
วิทยานิพนธ์/Thesis
application/pdf
eng
DegreeName: Master of Engineering
Level: Master's Degree
Descipline: Engineering Technology
Grantor: Thammasat University
©copyrights Thammasat University
RightsAccess:
ใช้เวลา
0.028717 วินาที
Nisanart Naksin
| Title | Contributor | Type |
|---|---|---|
| Ripening retardation of Namwa banana using low-cost ethylene scavenger in hydrophobic cellulose sachet and their effects on fruit quality
มหาวิทยาลัยธรรมศาสตร์ Nisanart Naksin | Paiboon Sreearunothai | วิทยานิพนธ์/Thesis |
Paiboon Sreearunothai