Publication: Biyobozunur Malçların Kapya Biberde Meyve Kalitesi ve Biyoaktif Bileşen İçeriği Üzerine Etkileri
Abstract
Çalışmanın birinci yılında, kapya biber yetiştiriciliğinde farklı formülasyonlara ve materyal özelliklerine sahip 2 adet biyobozunur plastik malç (BPM-1 ve BPM-2), biyobozunur kağıt malç (KM) ve polietilen plastik malç (PE) malçsız kontrol uygulaması ile karşılaştırılmıştır. Birinci yıl biber hasatını takiben malçlar toprak içerisine işlenerek toprak ortamında ayrışma süreçlerine maruz bırakılmıştır. Kapya biber bitkileri, bir sonraki yetiştirme sezonunda, ilk yılın deneme düzeni dikkate alınarak masuralar üzerine serilen aynı malçlar altında yeniden yetiştirilmiştir. Farklı malç uygulamalarının ve malçların toprağa karıştırılmasının kapya biberin kalite ve biyoaktif bileşen içeriği üzerine etkileri araştırılmıştır. Çalışmada, kapya biberlerin meyve boyu, eni, meyve et kalınlığı, renk özellikleri ile C vitamini, suda çözünür kuru madde (SÇKM), titre edilebilir asitlik (TEA), toplam fenolik madde miktarı, toplam flavonoid ve antioksidan aktivitesi olarak DPPH ve FRAP içerikleri belirlenmiştir. Farklı malç uygulamalarının kapya biber meyvelerinin boyu, meyve et kalınlığı, meyve kabuğunun L, a ve b renk değerleri ve SÇKM içeriğine etkisi istatistiksel olarak önemli bulunmamıştır. Malç uygulamalarından elde edilen meyvelerin meyve eni, toplam flavonoid ve DPPH içerikleri kontrole göre istatistiksel olarak çok önemli düzeyde (p<0.01) yüksek bulunmuştur. KM'de yetiştirilen biberlerin toplam flavonoid (716.34 mg QE kg-1), toplam fenolik bileşikler (2718.71 mg GAE kg-1), DPPH (127.42 mmol TE kg-1) ve FRAP değerleri (137.36 mmol TE kg-1) diğer malç uygulamalarına göre istatistiksel olarak çok önemli düzeyde düşük bulunmuştur. Farklı malç materyallerinin toprağa karıştırılmasından bir sonraki üretim sezonunda malç uygulamalarından elde edilen kapya biberlerin meyve boyu, eni, et kalınlığı, a ve b renk değerleri ile C vitamini, titre edilebilir asit, DPPH ve FRAP içeriklerinin arttığı tespit edilmiştir. Malçların toprağa karıştırılmasının kapya biber meyvelerinin kalitesi ve biyoaktif bileşen içeriği üzerine etkisinin daha belirgin olarak ortaya konulabilmesi için çalışmanın en az bir yıl daha devam ettirilmesi yararlı olacaktır.
In the first year of the study, 2 biodegradable plastic mulches with different formulations and material properties (BPM-1 and BPM-2), biodegradable paper mulch (PM) and polyethylene plastic mulch (PE) were compared to the control treatment without mulch in the capia pepper cultivation. Following the harvest of pepper fruits, mulches were incorporated into the soil and exposed to the biodegradation process in the soil. Capia pepper plants were re-grown in the next growing season under the same mulches sheeted on the raising bads taking into account the first year's experimental layout. The effects of different mulch applications and incorporation of mulches into the soil on the quality and bioactive component content of capia pepper were investigated. In the study, fruit length, width, fruit flesh thickness, color characteristics, vitamin C, water-soluble dry matter (WSDM), titratable acidity (TA), total phenolic compounds, total flavonoid, and DPPH and FRAP contents as antioxidant activity of capia peppers were determined. The effect of different mulch applications on the fruit length, fruit thickness, L, a and b color values of fruit skin and WSDM content of capia pepper fruits was not found statistically significant. The fruit width, total flavonoid and DPPH contents of the fruits obtained from the mulch applications were statistically significantly higher than the control. Total flavonoid (716.34 mg QE kg-1), total phenolic (2718.71 mg GAE kg-1), DPPH (127.42 mmol TE kg-1) and FRAP (137.36 mmol TE kg-1) values of capia pepper grown in KM were found to be statistically significantly lower than other mulches (p<0.01). It was determined that the fruit length and width, fruit flesh thickness, a and b color values, and vitamin C, titratable acid, DPPH and FRAP contents of the capia peppers obtained from mulch applications in the second growing season following the incorporation of mulches into the soil the in the previous growing season increased. It would be beneficial to continue the study for at least one year in order to more clearly demonstrate the effect of incorporating mulch into the soil on the quality and bioactive component content of capia pepper fruits.
In the first year of the study, 2 biodegradable plastic mulches with different formulations and material properties (BPM-1 and BPM-2), biodegradable paper mulch (PM) and polyethylene plastic mulch (PE) were compared to the control treatment without mulch in the capia pepper cultivation. Following the harvest of pepper fruits, mulches were incorporated into the soil and exposed to the biodegradation process in the soil. Capia pepper plants were re-grown in the next growing season under the same mulches sheeted on the raising bads taking into account the first year's experimental layout. The effects of different mulch applications and incorporation of mulches into the soil on the quality and bioactive component content of capia pepper were investigated. In the study, fruit length, width, fruit flesh thickness, color characteristics, vitamin C, water-soluble dry matter (WSDM), titratable acidity (TA), total phenolic compounds, total flavonoid, and DPPH and FRAP contents as antioxidant activity of capia peppers were determined. The effect of different mulch applications on the fruit length, fruit thickness, L, a and b color values of fruit skin and WSDM content of capia pepper fruits was not found statistically significant. The fruit width, total flavonoid and DPPH contents of the fruits obtained from the mulch applications were statistically significantly higher than the control. Total flavonoid (716.34 mg QE kg-1), total phenolic (2718.71 mg GAE kg-1), DPPH (127.42 mmol TE kg-1) and FRAP (137.36 mmol TE kg-1) values of capia pepper grown in KM were found to be statistically significantly lower than other mulches (p<0.01). It was determined that the fruit length and width, fruit flesh thickness, a and b color values, and vitamin C, titratable acid, DPPH and FRAP contents of the capia peppers obtained from mulch applications in the second growing season following the incorporation of mulches into the soil the in the previous growing season increased. It would be beneficial to continue the study for at least one year in order to more clearly demonstrate the effect of incorporating mulch into the soil on the quality and bioactive component content of capia pepper fruits.
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