ELMA KABUĞUYLA BESLENEN TENEBRIO MOLITOR LARVALARININ FİZİKOKİMYASAL ÖZELLİKLERİ VE LARVAL FERMANTASYONUN ELMA KABUĞUNUN FENOLİK PROFİLİNE ETKİSİ

Year 2024, , 981 - 995, 10.10.2024

Sedanur Demirbaş Yıldız Zehra Gülsünoğlu Konuşkan

https://doi.org/10.15237/gida.GD24072

Abstract

Bu çalışma, Tenebrio molitor larvalarının elma kabuklarını değerlendirme potansiyeli ve larval fermantasyonun elma kabuğunda bulunan fenolik maddeler, larvaların gelişme potansiyelleri ve fizikokimyasal özellikleri üzerindeki etkilerini araştırmayı amaçlamıştır. Mısır unu ve elma kabuğu farklı oranlarda (1:1, 1:2, 1:4) karıştırılmış ve fermantasyon 12 gün boyunca gerçekleştirilmiştir. 1:1 oranındaki besiyerinde (EMB) önemli değişiklikler gözlenmiş ve larva ağırlığı, kontrol (%58.6) ile karşılaştırıldığında %62.2 oranında artış göstermiştir. 12. gün sonunda larvaların kül, protein ve karbohidrat içeriklerinde artış, ancak yağ içeriğinde azalma görülmüştür. EMB besiyerinin fenolik içeriği ve antioksidan aktiviteleri başlangıç değerlerine kıyasla önemli ölçüde artarak 8. günde maksimum seviyesine ulaşmıştır. EMB besiyerinde dört farklı kuersetin türevi tespit edilmiştir: Kuersetin-3-rutinozit, kuersetin-3-O-glukozit, kuersetin-3-O-galaktozit ve kuersitrin. 8 gün sonra, kuersitrin ve kuersetin-3-O-glukozit miktarları başlangıç değerlerine kıyasla önemli ölçüde artmıştır. Bu bulgular, T. molitor larvalarının gıda atıklarını fenolik salınım veya dönüşüm yoluyla değerli fonksiyonel gıda bileşenlerine dönüştürebileceğini göstermektedir.

Keywords

Tenebrio molitor, elma kabuğu, fenolik madde, larval fermantasyon

PHYSICOCHEMICAL PROPERTIES OF TENEBRIO MOLITOR LARVAE FEEDING ON APPLE PEEL AND THE EFFECT OF LARVAL FERMENTATION ON THE PHENOLIC PROFILE OF APPLE PEEL

Abstract

This study explores the potential of Tenebrio molitor larvae to valorize apple peels and assesses larval fermentation’s impact on phenolics, growth potential and physicochemical properties of the larvae. Corn flour and apple peel were mixed in different ratios (1:1, 1:2, 1:4), and fermentation was conducted for 12 days. Significant changes occurred in the 1:1 ratio (EMB); larval weight increased by 62.2% compared to 58.6% in the control. After 12 days, the larvae showed increased ash, protein and carbohydrate contents, but reduced fat content. The phenolic content and antioxidant activities of the EMB medium significantly increased compared to the initial values, reaching their maximum level on day 8. Four quercetin derivatives were detected: quercetin-3-rutinoside, quercetin-3-O-glucoside, quercetin-3-O-galactoside and quercitrin. After 8 days, the amounts of quercitrin and quercetin-3-O-glucoside increased significantly. These findings suggest that T. molitor larvae can convert food waste into valuable functional food ingredients through phenolic release or conversion.

Keywords

Tenebrio molitor, apple peel, phenolic compounds, larval rearing

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