Farklı Nem İçeriklerindeki Siyez Buğdayı Tohumlarının Karbondioksit Değişimleri ve Bazı Mekanik Özelliklerinin Belirlenmesi

Year 2018, Volume: 4 Issue: 2, 216 - 223, 30.12.2018

Hakan Kibar

https://doi.org/10.24180/ijaws.480540

Abstract

Bu çalışmada; farklı nem
içeriklerindeki (%5, 10.5, 15, 20, 25) kavuzlu siyez buğdayı tohumlarında (Triticum monococcum L.) karbondioksit
(CO₂) solunum hızında meydana gelen değişimler ve bazı mekanik
özellikler araştırılmıştır. Tohumlar 10 °C’ de 3 ay süreyle sıcaklık ve nem
test kabininde depolanmıştır. Bu süre sonunda CO₂ değişimi %5, 10.5
ve 15 nem içeriklerinde 120 saat, %20 ve 25 nem içeriklerinde sırasıyla 26 ve 29
saat süreyle ölçüm yapılmıştır. Araştırmanın sonucunda %5, 10.5, 15, 20 ve 25
nem içeriklerindeki CO₂ düzeyleri sırasıyla 504-555, 510-578,
568-1074, 762-9999 ve 1500-9999 ppm olarak tespit edilmiştir. Minimum CO₂
solunum hızı 120. saatte %5 ve 10.5 nem içeriğinde 0.06 mgCO₂ kg^-1
h^-1 olarak belirlenmiştir. Maksimum CO₂ solunum
hızı ise %25 nem içeriğinde 1. saatte 18.09 mgCO₂ kg^-1 h^-1
olarak tespit edilmiştir. Artan nem içeriğine bağlı olarak mühendislik
özelliklerin artış gösterdiği belirlenmiştir. Elde edilen sonuçlara bağlı
olarak tohumların yüksek nem içeriğinde bozulması hızlanarak depo iç ortamının
çevresel koşulları (sıcaklık ve bağıl nem) olumsuz olarak etkilenebilecektir.
Farklı nem içeriklerine sahip tohumlarda daha düşük solunum hızları %5 nem içeriğinde
belirlenmiştir. Ancak depolamada %5’lik nem düzeyini sağlamak daha fazla
soğutma veya havalandırma maliyetine neden olacağından siyez buğdayı
tohumlarının %10.5 nem içeriğinde depolanması tohumların mühendislik
özellikleri açısından önerilmektedir. 

Keywords

Einkorn siyez buğdayı, karbondioksit değişimi, solunum hızı, nem içeriği

Determination of Carbon Dioxide Changes and Some Mechanical Properties of Siyez Wheat Seeds in Different Moisture Content

Abstract

The
changes in carbon dioxide (CO₂) respiration rate and some mechanical
properties of unhulled siyez wheat (Triticum
monococcum L.) in different moisture contents (5, 10.5, 15, 20, 25%) were
investigated in this study. The seeds were storaged in the temperature and
moisture test chamber at 10 °C for 3 months. At the end of this period, CO₂
changes were measured thourghout 120 hours at 5, 10.5 and 15% moisture contents
and 26 and 29 hours at 20 and 25% moisture contents. As a result of the study,
CO₂ levels of 5, 10.5, 15, 20 and 25% moisture contents were ranged
504-555 ppm, 510-578 ppm, 568-1074 ppm, 762-9999 ppm and 1500-9999 ppm,
respectively. Minimum CO₂ respiration rate was determined as 0.06
mgCO₂ kg^-1 h^-1 in 5 and 10.5% moisture content
at 120^th hours. The maximum CO₂ respiration rate was
determined as 18.09 mgCO₂ kg^-1 h^-1 at 1^th
hour in 25% moisture content. It was determined that the some engineering
properties increased due to increased moisture content. Depending on the
results obtained, the degradation of the seeds will accelerate and the indoor
environmental conditions (temperature and relative humidity) in storage may be
adversely affected by high moisture contents. The lower respiration rates in seeds with different
moisture contents were determined at 5% moisture content. However, it is determined that
the seeds of wheat can be stored in 10.5% moisture content since storage at 5%
moisture content may cause more cooling or ventilation cost. 

Keywords

Einkorn siyez wheat, carbon dioxide change, respiration rate, moisture content

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