Preparation and utilization of biochar from agricultural wastes as ethylene adsorber for fruit packaging

Name: Phanawat Charoensuk

keyword: Ethylene Adsorber

MeSH: Biochar -- 309739

Classification :.DDC: e-Theses

; Fruit Application

MeSH: Agricultural wastes

MeSH: Chemisorption -- 309740

LCSH: Biochar -- 309739

LCSH: Agricultural wastes

LCSH: Chemisorption -- 309740

Abstract: In Thailand, fruits and vegetables are grown and are interested in the export market due to their flavors, texture, aroma, variety, and seasonality. However, the quality of the fruit should be controlled in the market. Ethylene, a plant hormone, exerts a substantial influence on the acceleration of fruit ripening, pigment development, and aroma. Which can significantly reduce the fruit's shelf-life and shorten transportation time, posing a limitation for launching the product in the export market. Thus, ethylene scavengers extend fruit shelf-life during storage and transport. Currently, there are various ethylene scavengers are employed to available in the market. However, the toxicity, suitable quantity, and production cost of the ethylene scavengers have been concerned. Biochar, an alternative charcoal-like material, has gained attention as an adsorbent due to its porosity, low production cost, and environmentally friendly preparation process. The biochar samples were examined for their morphology, surface area, pore diameter, pore volume, functional groups, CHNS/O composition, elemental composition, and thermal properties using various techniques such as scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET) analysis, Fourier-transform infrared spectroscopy (FTIR) CHNS/O analyzer, X-ray fluorescence (XRF) spectrophotometry, thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). From the results, each type of biochar had different elemental compositions and surface area. The highest surface area of 110.66 m²/g was found in rice husk biochar. In addition, biochar samples' ethylene adsorption efficiency was determined in closed containers and low-density polyethylene (LDPE) bags containing ‘Gros Michel’ bananas treated with different biochar types. The results showed that the rice husk biochar exhibited ethylene adsorption (31.14%) in the closed containers at 144 h and exhibited the lowest total color difference ΔE value of 22.30 compared to other treatments. Thus, the rice husk biochar could be used as an ethylene adsorber to delay the fruit ripening in packaging applications.

Mae Fah Luang University. Learning Resources and Educational Media Center

Address: CHIANG RAI

Email: library@mfu.ac.th

Name: Orawan Suwantong

Role: Advisor

Created: 2023

Modified: 2024-07-15

Issued: 2024-07-15

วิทยานิพนธ์/Thesis

application/pdf

CallNumber: e-Theses

eng

DegreeName: Master of Science

Level: Master's Degree

Descipline: Applied Chemistry

Grantor: Mae Fah Luang University

©copyrights Mae Fah Luang University

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