The effect of green synthesized nanoparticles on organic acids in strawberry and sweet cherry during storage

Year 2025, Volume: 42 Issue: 2, 142 - 151, 30.08.2025

Emircan Dinçer , Onur Saraçoğlu , Nesrin Korkmaz

https://doi.org/10.55507/gopzfd.1686424

Abstract

This study investigated the effects of boron-, copper-, and chitosan-based nanoparticles (synthesized by the green synthesis method) on organic acid contents of strawberries and sweet cherries during storage. The fruits were dipped in nanoparticle solutions for 2 minutes and stored under cold conditions (0 ± 0.5 °C for sweet cherries, 1 ± 0.5 °C for strawberries) at 90 ± 5% relative humidity. Malic, citric, and oxalic acid levels were evaluated. In strawberries, the Boron1 treatment (500 ppm boron nanoparticle) was the most effective in preserving organic acids, particularly citric acid, which remained at 2431.5 mg kg⁻¹ fw by the end of storage compared to 1702.5 mg kg⁻¹ fw in the control group. In sweet cherries, Chitosan (1% nanochitosan solution) treatment preserved the highest level of malic acid (2256.7 mg kg⁻¹ fw), while Boron1 contributed to the retention of citric acid (20.75 mg kg⁻¹ fw), exceeding even the initial harvest value. Oxalic acid degradation was slowed in the treated groups compared to the control in both fruits. The results suggest that nanoparticle-assisted edible coatings may offer a promising strategy for extending shelf life and partially preserving phytochemical content. Moreover, it was observed that the dominant organic acid varied by fruit species, i.e., citric acid in strawberries and malic acid in sweet cherries. These findings support the view that nanoparticle applications should be tailored to fruit type and may contribute to the development of more sustainable postharvest preservation approaches.

Keywords

Coating , Nanoparticle , Organic acid , Storage , Sustainable agriculture

Ethical Statement

There is no need to obtain permission from the ethics committee for this study.

Supporting Institution

This research was financially supported by the TÜBİTAK 1003 - Primary Subjects R&D Funding Program (222O604). Additionally, it is based on a doctoral thesis conducted as part of the YÖK 100/2000 PhD Project 'Sustainable Agriculture' program, supported by the Higher Education Council.

Project Number

222O604

Thanks

This research was financially supported by the TÜBİTAK 1003 - Primary Subjects R&D Funding Program (222O604). Additionally, it is based on a doctoral thesis conducted as part of the YÖK 100/2000 PhD Project 'Sustainable Agriculture' program, supported by the Higher Education Council.

Yeşil sentez yöntemiyle elde edilen nanopartiküllerin çilek ve kirazda depolama süresince organik asitler üzerine etkisi

Abstract

Bu çalışma, yeşil sentez yöntemiyle elde edilen bor, bakır ve kitosan temelli nanopartiküllerin, çilek ve kiraz meyvelerinin depolama süresince organik asit içerikleri üzerindeki etkilerini araştırmaktadır. Meyveler, 2 dakika boyunca nanopartikül çözeltilerine daldırılmış ve soğuk koşullarda (kirazlar için 0 ± 0.5 °C, çilekler için 1 ± 0.5 °C) %90 ± 5 bağıl nem ortamında muhafaza edilmiştir. Çalışma kapsamında malik, sitrik ve okzalik asit düzeyleri değerlendirilmiştir. Çilekte, Boron1 uygulaması (500 ppm bor nanopartikülü) organik asitlerin korunmasında en etkili yöntem olmuş; özellikle sitrik asit, depolama sonunda 2431.5 mg kg⁻¹ t.a. düzeyinde korunarak kontrol grubundaki 1702.5 mg kg⁻¹ t.a. seviyesinin üzerinde kalmıştır. Kirazda ise, Kitosan uygulaması (%1 nanochitosan çözeltisi) malik asidin en yüksek düzeyde korunmasını sağlamış (2256.7 mg kg⁻¹ t.a.), Boron1 uygulaması ise sitrik asidin korunmasına katkı sağlamış ve bu bileşik, hasat değerini aşarak 20.75 mg kg⁻¹ t.a. düzeyine ulaşmıştır. Her iki meyvede de, okzalik asit bozunumu uygulama gruplarında kontrol grubuna göre daha yavaş gerçekleşmiştir. Elde edilen sonuçlar, nanopartikül destekli yenilebilir kaplama uygulamalarının raf ömrünü uzatmada ve fitokimyasal içeriği kısmen korumada umut verici bir yaklaşım olabileceğini göstermektedir. Ayrıca, baskın organik asit içeriğinin meyve türüne göre değiştiği; çilekte sitrik asidin, kirazda ise malik asidin öne çıktığı belirlenmiştir. Bu bulgular, nanopartikül uygulamalarının meyve türüne özel olarak planlanması gerektiğini ve sürdürülebilir hasat sonrası koruma tekniklerinin geliştirilmesine katkı sağlayabileceğini ortaya koymaktadır.

Keywords

Kaplama , Nanopartikül , Organik asit , Depolama , Sürdürülebilir tarım

Project Number

222O604

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