Non-Destructive Detection Of Some Quality Characteristics Of Strawberry Fruit In The Ripening Stage Using Near Infrared Spectroscopy

Year 2024, Volume: 11 Issue: 1, 9 - 18, 28.01.2024

İlknur Yılmaz , Mehmet Burak Büyükcan

https://doi.org/10.30910/turkjans.1349290

Abstract

The products' internal and external quality characteristics were predicted using Fourier transform (FT-NIR) near-infrared spectroscopy technique in Albion cultivar (Fragaria ananassa) strawberry samples. Since the shelf life of strawberry fruits is short after harvest, their quality characteristics are an essential criterion, especially for exported products. Determining the quality characteristics of products using non-destructive measurement systems such as FT-NIR is less time-consuming and less costly than chemical or physical methods. Quality features are significant for exported products. Non-destructive spectroscopic measurements of strawberries were made using reflectance (780-2500 nm) and transmittance (800-1725 nm) techniques. Generally, high calibration and validation results were obtained for both measurement methods (Reflectance and Transmittance) in color properties. Hue prediction values on transmittance were predicted to have the best result in the measurement at R2=84.81 (RMSECV= 0.347) for validation, while R2=91.77 (RMSEE= 0.268) for calibration. In reflectance mode, it showed high predictive performance of a* value with the red color variable R2=82.19 (RMSECV= 5.81) for validation and R2=89.42 (RMSEE= 4.73) for calibration during the ripening period of the strawberry. On the other hand, the intrinsic properties' prediction performance remained lower than the color properties. The most successful prediction performance was found for soluble solids content (SSC) (R2=50.66; RMSECV= 0.951) in reflectance mode, while pH (R2=58.21; RMSECV= 0.0472) for transmittance mode. As can be seen from the results, using FT-NIR spectroscopy to predict color properties without damage during the ripening period of strawberry products was highly successful, while more restrictive results were obtained in predicting internal properties.

Keywords

Strawberry, Near Infrared, Color, Non-destructive

Project Number

FYL-2022-3997

Yakın Kızılötesi Spektroskopisi Kullanılarak Olgunlaşma Aşamasındaki Çilek Meyvesinin Bazı Kalite Özelliklerinin Hasarsız Tespiti

Abstract

Yapılan çalışmada, Albion çeşidi (Fragaria ananassa) çilek örneklerinde Fourier dönüşümü (FT-NIR) yakın kızılötesi spektroskopi tekniği kullanılarak ürünlerin iç ve dış kalite özellikleri tahmin edilmesi amaçlanmaktadır. Çilek meyvelerinin raf ömürleri hasattan sonra kısa olmasından dolayı özellikle ihraç edilmekte olan ürünler için kalite özellikleri önemli bir kriterdir. FT-NIR gibi hasarsız ölçüm sistemleri kullanılarak ürünlerin kalite özelliklerinin belirlenmesi kimyasal ya da fiziksel metotlara göre daha az zaman alıcı ve daha az maliyetlidir. Özellikle ihracatı gerçekleştirilen ürünler için kalite özellikleri önem arz etmektedir. Çilek örneklerinin hasarsız spektroskopik ölçümleri yansıma (780-2500 nm) ve geçirgenlik (800-1725 nm) teknikleri kullanılarak yapılmıştır. Genel olarak renk özellikleri açısından her iki ölçüm yönteminde (Yansıma ve Geçirgenlik) yüksek kalibrasyon ve doğrulama sonuçları elde edilmiştir. Geçirgenliğe ilişkin renk tonu tahmin değerlerinin doğrulama için R2=84.81 (RMSECV= 0.347) ve kalibrasyon için R2=91.77 (RMSEE= 0.268) ile en iyi sonucu vereceği tahmin edilmiştir. Yansıma modunda, olgunlaşma sırasında doğrulama için kırmızı renk değişkeni R2=82.19 (RMSECV= 5.81) ve kalibrasyon için R2=89.42 (RMSEE= 4.73) ile a* değerinin yüksek tahmin performansı göstermiştir. Diğer taraftan, içsel özelliklerin tahmin performansı, renk özelliklerine göre daha düşük kalmıştır. En başarılı tahmin performansı yansıma modunda çözülebilir kuru madde oranı (R2=50.66; RMSECV= 0.951) için, geçirgenlik modunda ise pH (R2=58.21; RMSECV= 0.0472) için bulunmuştur. Sonuçlardan da anlaşılacağı üzere çilek ürünlerinin olgunlaşma döneminde renk özelliklerinin zarar görmeden tahmin edilmesinde FT-NIR spektroskopisi kullanılması oldukça başarılı olurken, iç özelliklerin tahmininde daha kısıtlayıcı sonuçlar elde edilmiştir.

Keywords

Çilek, Yakın Kızıl Ötesi, Renk, Hasarsız

Supporting Institution

Çanakkale Onsekiz Mart Üniversitesi

Project Number

FYL-2022-3997

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