Blueberry leaf extracts incorporated chitosan coatings for preserving postharvest quality of fresh blueberries Public Deposited

http://ir.library.oregonstate.edu/concern/articles/pv63g202t

This is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by Elsevier and can be found at:  http://www.journals.elsevier.com/postharvest-biology-and-technology/.

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • The phenolic compounds in blueberry (Vaccinium spp.) fruit and leaf extracts (BLE) were determined based on HPLC analysis. Antimicrobial assays against Staphylococcus aureus, Listeria monocytogenes, Salmonella typhimurium and Escherichia coli, as well as fungi isolated from the rotting blueberry fruit were conducted. The effects of chitosan coating incorporating different concentrations of BLE on the quality of fresh fruit during postharvest storage at 2±1 °C and 95±2% relative humidity (RH) for 35 d and then at room conditions for 3 d were also investigated. Five different coating treatments were applied including 2% (w/v) chitosan coating (T1), 2% (w/v) chitosan coating containing 4% (w/v, T2), 8% (w/v, T3), or 12% (w/v, T4) BLE, and 2% (w/v) chitosan coating containing 12% BLE plus modified atmosphere packaging (MAP at 3 kPa O₂+12 kPa CO₂) (T5). A sample of blueberries dipped into distilled water was used as control (T0). BLE had a greater variety of phenolic compounds than fruit extracts with syringic acid the highest concentration (0.259±0.003 g kg⁻¹), but the total phenolic content in BLE was lower (P < 0.05) than in fruit extracts. BLE showed good antimicrobial activity against all tested microorganisms, with a minimum inhibition concentration from 25-50 g L⁻¹. The 2% chitosan coating that incorporated 8% or 12% BLE showed some degree of decreasing decay rate of fruit compared with the control, and the coating with BLE plus MAP had more effective control of fruit decay. All treated samples maintained higher total phenolic content and radical scavenging activity than the control. This study suggested that chitosan coating incorporating BLE can be employed to extend shelf-life and maintain high nutritional value of fresh blueberries during postharvest storage.
Resource Type
DOI
Date Available
Date Issued
Citation
  • Yang, G., Yue, J., Gong, X., Qian, B., Wang, H., Deng, Y., & Zhao, Y. (2014). Blueberry leaf extracts incorporated chitosan coatings for preserving postharvest quality of fresh blueberries. Postharvest Biology and Technology, 92, 46-53. doi:10.1016/j.postharvbio.2014.01.018
Series
Keyword
Rights Statement
Funding Statement (additional comments about funding)
Publisher
Peer Reviewed
Language
Replaces
Additional Information
  • description.provenance : Submitted by Deanne Bruner (deanne.bruner@oregonstate.edu) on 2014-06-04T18:21:19Z No. of bitstreams: 1 ZhaoYanyunFoodScienceTechnologyBlueberryLeafExtract.pdf: 905925 bytes, checksum: d42498078779559a576b5b3790fbcacf (MD5)
  • description.provenance : Approved for entry into archive by Deanne Bruner(deanne.bruner@oregonstate.edu) on 2014-06-04T18:22:35Z (GMT) No. of bitstreams: 1 ZhaoYanyunFoodScienceTechnologyBlueberryLeafExtract.pdf: 905925 bytes, checksum: d42498078779559a576b5b3790fbcacf (MD5)
  • description.provenance : Made available in DSpace on 2014-06-04T18:22:35Z (GMT). No. of bitstreams: 1 ZhaoYanyunFoodScienceTechnologyBlueberryLeafExtract.pdf: 905925 bytes, checksum: d42498078779559a576b5b3790fbcacf (MD5) Previous issue date: 2014-06

Relationships

In Administrative Set:
Last modified: 07/26/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items