Effects of Sodium Metabisulphide Treatment and Modified Atmosphere Packaging on Cold Storage of Carrots

The aim of this study was to investigate the effects of sodium metabisulphide (SMBS) treatment and modified atmosphere packaging (MAP) on the quality of ‘Nanco F1’ variety of Nantes group carrots grown in Kırıkhan during cold storage. Harvested carrots were placed in imperforated bag, and/or MAP and applied SMBS (dose of 1%) after washing with tap water for 3 minutes and stored at 0±0.5 °C and 90±5.0% relative humidity for 5 months and analyzed every month. In addition, carrots were kept at 20±0.5 ºC and 75±5.0 % relative humidity for 7 days in order to study its shelf life. The weight loss, carrot color (L* and h°), appearance (1-9), rooting and sprouting rate, rooting and sprouting degree, incidence of fungal decay, physiological disorders, carrot firmness, total soluble solid content, pH value, titratable acid content and taste (1-9) were determined during shelf life and storage. According to the findings, weight loss in imperforated bag was higher than MAP treatments during storage. It was determined that using ImPBTW (imperforated bag and washing with tap water) and ImPBTW + SMBS treatments, ‘Nanco F1’ type carrots could be kept at 0 °C for 3 months and 85-90% relative humidity without any quality deterioration. It was also determined that using MAPTW (modified atmosphere packaging and washing with tap water) + SMBS treatment, ‘Nanco F1’ type carrots could be stored for 4 months and using MAPTW treatment, they could be stored for 5 months at 0 °C and 85-90% relative humidity without losing much of the quality for local and distant markets. Also, it was found that SMBS treatments were not sufficient to prevent rooting and sprouting

Effects of zeolite treatment on cold storage of carrots

Bu çalışmanın amacı, Hatay ili Kırıkhan ilçesinde yetiştirilen Nantes grubu havuçlardan ‘Nanco F1’ havuç çeşidinin soğukta muhafazası sırasında kalitesine zeolit ve modifiye atmosferde paketleme (MAP)’nin etkilerinin belirlenmesidir. Hasat edilen havuçlar çeşme suyu içine 3 dakika süre ile daldırıldıktan sonra zeolit uygulanmış, delikli torba veya modifiye atmosferde paketleme (MAP) yapılarak soğuk hava depolarında 0±0,5 C’de ve %90±5,0 oransal nemde 5 ay süreyle depolanmıştır. Ayrıca raf ömrü belirlemek için her ay soğuk depodan çıkarılan havuçlar 7 gün 20±0,5 °C’de %75±5,0 oransal nemde bekletilerek raf ömrü analizleri yapılmıştır. Periyodik olarak ayda bir ağırlık kayıpları, görünüş (1-9), tat (1-9), mantarsal ve fizyolojik nedenlerle bozulan havuç miktarları, havuç sertliği, havuç rengi (L* ve h°), köklenme ve filizlenme oranları, köklenme ve filizlenme derecesi, titre edilebilir asit (TEA) miktarı, pH değeri ve suda çözünebilir toplam kuru madde (SÇKM) miktarı incelenmiştir. Elde ettiğimiz bulgularımıza göre, zeolit uygulamaları ağırlık kayıplarını ve köklenme ve filizlenmeyi önlemede yeterli olmamıştır. Ayrıca, tat puanları düşük olmuştur. Uzun süre başarılı muhafaza için olumlu sonuçlar veren MAP önerilebilir.The aim of this study, effects of zeolite and modified atmosphere packaging (MAP) treatments on the quality in ‘Nanco F1’ variety carrots from Nantes group grown in Kırıkhan during cold storage. Harvested carrots were imperforated bag and/or modified atmosphere packaging (MAP) and applied zeolite after washing with tap water 3 minutes and stored at 0±0.5 C and 90±5.0% relative humidity for 5 months are used analyzed every month. In addition to carrots were kept at 20±0.5 ºC and 75±5.0% relative humidity for 7 days in order to similar shelf life. The weight loss, appearance (1-9), taste (1-9), incidence of fungal decay and physiological disorders, carrot firmness, carrot color (L* and h°), rooting and sprouting rate and rooting and sprouting degree, titratable acid content, pH value and total soluble solid content were determined during shelf life and storage. In the light of our findings, zeolite treatments were not sufficient to prevent weight losses and rooting and sprouting. Also, the taste scores were low. For a long and successful storage, applying MAP might give more positive results