Work

Application of Electronic Nose to Monitor the Quality and Ripening Stages of Papaya During Postharvest Storage

Year: 2024

Type: article

Abstract: High Resolution Image Download MS PowerPoint Slide Electronic noses (EN) are recently being explored for their application in postharvest quality monitoring. In this study, EN was used to assess different papaya ripening stages (days 1, 3, and 5 postharvest) through odor profile changes. Case-Based Reasoning classification analyzed EN sensor responses, showing 84.25% similarity between days 1 and 3, 82.81% between days 1 and 5, and 94.19% between days 3 and 5, all below 98%, indicating significant differences in volatile profiles. Gas chromatography–mass spectrometry identified specific volatile compounds for each day, such as vinyl butyrate and allyl propionate (day 1), acetone, tridecane (day 3), and cyclobutanol, oxalic acid (day 5). The sensor values showed strong correlations with physiochemical changes during ripening ( r 2 = 0.845 for weight, 0.943 for titratable acidity, 0.883 for total soluble solids, and −0.943 for chromaticity). These findings demonstrate EN’s promising potential as a reliable, nondestructive tool for distinguishing papaya ripeness levels during postharvest storage.

Source: ACS Food Science & Technology

DOI: 10.1021/acsfoodscitech.4c00140

Authors: Ayesha Ashraf Khan, Yasmeen Siddiqui, Tan Guang Heng, Asgar Ali

Institutions: University of Nottingham, University of Nottingham Malaysia Campus, King Faisal University, The University of Western Australia

Language: English

Topic: Advanced Chemical Sensor Technologies

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Zero hunger

Open Access status: hybrid

Estimated APC paid: $4,500