Antifungal Activity of Water-Based Adhesives Derived from Pineapple Stem Flour with Apple Cider Vinegar as an Additive
2
Issued Date
2023-04-01
Resource Type
eISSN
20734360
Scopus ID
2-s2.0-85152859687
Journal Title
Polymers
Volume
15
Issue
7
Rights Holder(s)
SCOPUS
Bibliographic Citation
Polymers Vol.15 No.7 (2023)
Suggested Citation
Ninsuwan K., Nimnuan J., Watcharakitti J., Siriwong C., Amornsakchai T., Smith S.M. Antifungal Activity of Water-Based Adhesives Derived from Pineapple Stem Flour with Apple Cider Vinegar as an Additive. Polymers Vol.15 No.7 (2023). doi:10.3390/polym15071735 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/81988
Title
Antifungal Activity of Water-Based Adhesives Derived from Pineapple Stem Flour with Apple Cider Vinegar as an Additive
Author's Affiliation
Other Contributor(s)
Abstract
As a byproduct of bromelain extraction procedures, pineapple stem flour is underutilized. Since water glues derived from gelatinization typically have poor mold resistance, this study aims to produce flour-based value-added products, such as mold-resistant water-based adhesives. To address this issue, this study explored the use of apple cider vinegar (ACV) as a low-cost, non-toxic, commercially available antifungal agent to improve the mold resistance of adhesives. Furthermore, laurate flour was produced via a transesterification of the flour and methyl laurate using a K2CO3 catalyst. Both the unmodified flour and the functionalized flour were employed to prepare water-based adhesives. For both flour systems, adding ACV at concentrations of at least 2.0% v/v enhanced the mold resistance of the adhesives and completely inhibited the development of A. niger mycelia for up to 90 days of storage. The adhesives made from the transesterified flour exhibited a higher shear strength for the paper bonding (ca. 8%) than the unmodified ones. Additionally, the ACV additive had no negative effects on the shear strengths of the water-based adhesives. All of the flour-based adhesives developed in this study had a higher shear strength for paper substrates than two locally available commercial water glues.