Nano-chitosan as an antimicrobial agent in preservative solutions for cut flowers

Autor(es)

Spricigo, Poliana C. ^[1] ; Pilon, Lucimeire ^[2] ; Trento, Jessica P. ^[3] ; de Moura, Marcia R. ^[4] ; Bonfim, Kely S. ^[4] ; Mitsuyuki, Milene C. ^[5] ; Mattoso, Luiz H. C. ^[5] ; Ferreira, Marcos D. ^[5]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo USP ESALQ, Dept Prod Vegetal, Piracicaba - Brazil

^[2] Embrapa Hortal, Pesquisa & Desenvolvimento, Brasilia, DF - Brazil

^[3] Univ Fed Sao Carlos UFSCar, Ciencias Biol, Sao Carlos - Brazil

^[4] Univ Estadual Paulista UNESP, Dept Fis & Quim, Fac Engn, Ilha Solteira - Brazil

^[5] Embrapa Instrumentacao, Pesquisa & Desenvolvimento, Sao Carlos - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY; v. 96, n. 8, p. 2168-2175, AUG 2021.
• Citações Web of Science: 0

Resumo

BACKGROUND Cut flowers require proper postharvest stem hydration to prolong vase life. Nano-sized chitosan is an effective antimicrobial agent that has several potential agricultural applications. In this study, we compared the efficacies of solutions containing chitosan nanoparticles, regular chitosan particles, citric acid, and distilled and tap water controls in treating cut gerbera inflorescences during postharvest storage. Relative water uptake (RWU), transpiration rate (TR), water balance (WB), ligule color, solution pH, stem bending, stem-end blockage, and counts of bacteria, mold and yeast were investigated. RESULTS The solution containing chitosan nanoparticles prevented stem bending, enabled higher RWU (41.8 g kg(-1) day(-1)), established a suitable WB, and controlled microbial growth more efficiently than the other solutions. The chitosan nanoparticle solution strongly inhibited molds and yeasts. CONCLUSION The results of this study demonstrated that nano-chitosan is a promising postharvest preservative for cut gerbera inflorescences. (c) 2021 Society of Chemical Industry (SCI). (AU)

• Processo FAPESP: 19/06170-1 - Incorporação de nanocelulose bacteriana em matrizes poliméricas hidrossolúveis comestíveis para o estudo da viabilidade no preparo de novos nanocompósitos
• Beneficiário: Márcia Regina de Moura Aouada
• Modalidade de apoio: Auxílio à Pesquisa - Regular