Effect of Aqueous n-Butanol Treatments on Shelf-Life Extension of Longkong Fruit during Ambient Storage

The pericarp of the Longkong fruit rapidly browns during ambient storage, typically reducing its shelf life to between 3 and 7 days. Recently, n-butanol has demonstrated a promising effect in preventing this deterioration, extending the shelf life of tropical fruits to more than a week. The present...

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Main Authors: Narin Charoenphun, Ali Muhammed Moula Ali, Balaji Paulraj, Karthikeyan Venkatachalam
Format: Article
Language:English
Published: MDPI AG 2023-08-01
Series:Horticulturae
Subjects:
Online Access:https://www.mdpi.com/2311-7524/9/8/938
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author Narin Charoenphun
Ali Muhammed Moula Ali
Balaji Paulraj
Karthikeyan Venkatachalam
author_facet Narin Charoenphun
Ali Muhammed Moula Ali
Balaji Paulraj
Karthikeyan Venkatachalam
author_sort Narin Charoenphun
collection DOAJ
description The pericarp of the Longkong fruit rapidly browns during ambient storage, typically reducing its shelf life to between 3 and 7 days. Recently, n-butanol has demonstrated a promising effect in preventing this deterioration, extending the shelf life of tropical fruits to more than a week. The present study exploited this opportunity to examine the exogenous application of aqueous n-butanol at various concentrations (0.2–0.6%) in controlling pericarp browning and suppressing different oxidoreductase enzymes in the pericarp under prolonged ambient storage conditions (8 days). Every two days, the fruit pericarps were tested for color (lightness (L*), redness (a*), and yellowness (b*)), browning index (BI), membrane permeability loss (MPL), malondialdehyde (MDA) content, total phenolic content (TPC), and reactive oxygen species (ROS). Enzymes including phenylalanine ammonia lyase (PAL), polyphenol oxidase (PPO), phospholipase D (PLD), lipoxygenase (LOX), superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPX) were also analyzed. All sample test results showed that increased storage significantly impacted color characteristics (decreased L*, b* and increased a*, and BI). MPL, MDA, and ROS also continuously increased. Furthermore, the browning-related enzymes (PAL and PPO), membrane-degrading enzymes (PLD and LOX), and antioxidant enzymes (SOD, CAT, and GPX) continuously increased in all pericarp samples throughout the storage. Among the samples, pericarp color, BI, MPL, MDA, PAL, PPO, PLD, and LOX were significantly high in the control samples, consequently adversely affecting the quality and shelf life of Longkong. On the other hand, the n-butanol-treated samples significantly controlled the loss and all problematic enzymes while improving the activities of SOD, CAT, and GPX in the pericarp. Furthermore, the positive effect of n-butanol application was dose-dependent; higher concentrations (0.4–0.6%) performed well in protecting the fruit from deterioration.
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spelling doaj.art-0c057b9d83ed42e0ac41183fdca8fbea2023-11-19T01:22:04ZengMDPI AGHorticulturae2311-75242023-08-019893810.3390/horticulturae9080938Effect of Aqueous n-Butanol Treatments on Shelf-Life Extension of Longkong Fruit during Ambient StorageNarin Charoenphun0Ali Muhammed Moula Ali1Balaji Paulraj2Karthikeyan Venkatachalam3Faculty of Science and Arts, Burapha University Chanthaburi Campus, Khamong, Thamai, Chanthaburi 22170, ThailandDepartment of Food Science and Technology, King Mongkut’s Institute of Technology Ladkrabang, School of Food Industry, Bangkok 10520, ThailandPG and Research Centre in Biotechnology, MGR College, Hosur 635130, IndiaFaculty of Innovative Agriculture and Fishery Establishment Project, Prince of Songkla University, Surat Thani Campus, Makham Tia, Muang, Surat Thani 84000, ThailandThe pericarp of the Longkong fruit rapidly browns during ambient storage, typically reducing its shelf life to between 3 and 7 days. Recently, n-butanol has demonstrated a promising effect in preventing this deterioration, extending the shelf life of tropical fruits to more than a week. The present study exploited this opportunity to examine the exogenous application of aqueous n-butanol at various concentrations (0.2–0.6%) in controlling pericarp browning and suppressing different oxidoreductase enzymes in the pericarp under prolonged ambient storage conditions (8 days). Every two days, the fruit pericarps were tested for color (lightness (L*), redness (a*), and yellowness (b*)), browning index (BI), membrane permeability loss (MPL), malondialdehyde (MDA) content, total phenolic content (TPC), and reactive oxygen species (ROS). Enzymes including phenylalanine ammonia lyase (PAL), polyphenol oxidase (PPO), phospholipase D (PLD), lipoxygenase (LOX), superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPX) were also analyzed. All sample test results showed that increased storage significantly impacted color characteristics (decreased L*, b* and increased a*, and BI). MPL, MDA, and ROS also continuously increased. Furthermore, the browning-related enzymes (PAL and PPO), membrane-degrading enzymes (PLD and LOX), and antioxidant enzymes (SOD, CAT, and GPX) continuously increased in all pericarp samples throughout the storage. Among the samples, pericarp color, BI, MPL, MDA, PAL, PPO, PLD, and LOX were significantly high in the control samples, consequently adversely affecting the quality and shelf life of Longkong. On the other hand, the n-butanol-treated samples significantly controlled the loss and all problematic enzymes while improving the activities of SOD, CAT, and GPX in the pericarp. Furthermore, the positive effect of n-butanol application was dose-dependent; higher concentrations (0.4–0.6%) performed well in protecting the fruit from deterioration.https://www.mdpi.com/2311-7524/9/8/938longkongpericarpn-butanolcoatingshelf lifeenzyme
spellingShingle Narin Charoenphun
Ali Muhammed Moula Ali
Balaji Paulraj
Karthikeyan Venkatachalam
Effect of Aqueous n-Butanol Treatments on Shelf-Life Extension of Longkong Fruit during Ambient Storage
Horticulturae
longkong
pericarp
n-butanol
coating
shelf life
enzyme
title Effect of Aqueous n-Butanol Treatments on Shelf-Life Extension of Longkong Fruit during Ambient Storage
title_full Effect of Aqueous n-Butanol Treatments on Shelf-Life Extension of Longkong Fruit during Ambient Storage
title_fullStr Effect of Aqueous n-Butanol Treatments on Shelf-Life Extension of Longkong Fruit during Ambient Storage
title_full_unstemmed Effect of Aqueous n-Butanol Treatments on Shelf-Life Extension of Longkong Fruit during Ambient Storage
title_short Effect of Aqueous n-Butanol Treatments on Shelf-Life Extension of Longkong Fruit during Ambient Storage
title_sort effect of aqueous n butanol treatments on shelf life extension of longkong fruit during ambient storage
topic longkong
pericarp
n-butanol
coating
shelf life
enzyme
url https://www.mdpi.com/2311-7524/9/8/938
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