Papaya (Carica Papaya L.) Tohumlarının Bazı Fiziko-Mekanik Özelliklerinin Belirlenmesi

Öz

Bu çalışmanın amacı, tropikal ve subtropikal iklimlere uyum sağlayabilen ve son yıllarda Türkiye’de ticari önem kazanmış papaya (Carica papaya L.) tohumlarının bazı geometrik, gravimetrik ve renk parametrelerinin incelenmesidir. Papaya tohumlarının ortalama uzunluk, genişlik ve kalınlık değerleri ölçülmüş, geometrik ortalama çap, küresellik, en/boy oranı ve tohum yüzey alanı bu veriler kullanılarak hesaplanmıştır. Yığın hacim ağırlığı, gerçek hacim ağırlığı, tane hacmi ve porozite değerleri de belirlenmiştir. Tohumların yaş baz nem içeriği %7.20 (y.b.) olarak bulunmuştur. Ortalama uzunluk, genişlik ve kalınlık değerleri sırasıyla 5.402 mm, 3.923 mm ve 3.730 mm olarak ölçülmüştür. Geometrik ortalama çap, küresellik, en/boy oranı ve tohum yüzey alanı sırasıyla 4.290 mm, %79.5, 0.727, ve 58.024 mm2 olarak hesaplanmıştır. Ortalama statik yığılma açısı 21.737° olarak bulunmuştur. Alüminyum, krom, demir, plastik, kauçuk, laminant, fayans, karton, cam ve MDF (Orta Yoğunluklu Lif Levha) gibi farklı yüzeylerde test edilen statik sürtünme katsayıları alüminyum yüzeyde en yüksek (0.50), MDF yüzeyde ise en düşük (0.33) değerler gözlenmiştir. Tohumların gerçek hacim ağırlığı 0.646 (g cm-3), tane hacmi 4.080 (cm3) ve porozite değeri %62.027 olarak bulunmuştur. Bu parametrelerin belirlenmesi, tohumların tarım makinelerinde işlenmesine yönelik tasarımlara bilimsel temel oluşturmaktadır. Bununla birlikte papaya tohumlarının geometrik, gravimetrik ve renk özelliklerinin ortaya konması hem literatüre hem de Türkiye’de giderek artan papaya yetiştiriciliğine önemli katkılar sunmaktadır.

Anahtar Kelimeler

• papaya
• pawpaw
• papaya tohumu
• fiziko-mekanik

Some Physical Properties of Papaya (Carica Papaya L.) Seeds

Öz

The aim of this study is to investigate certain geometric, gravimetric, and color parameters of papaya (Carica papaya L.) seeds, which can adapt to tropical and subtropical climates and have gained commercial importance in Turkey in recent years. The average length, width, and thickness of the seeds were measured, and the geometric mean diameter, sphericity, aspect ratio, and seed surface area were calculated. Bulk density, true density, seed volume, and porosity were also determined. The moisture content on a wet basis was found to be 7.20%. The average length, width, and thickness were 5.402 mm, 3.923 mm, and 3.730 mm, respectively. The geometric mean diameter, sphericity, aspect ratio, and seed surface area were 4.290 mm, 79.5%, 0.727, and 58.024 mm², respectively. The average static angle of repose was measured as 21.737°. Static coefficients of friction were tested on different surfaces, including aluminum, chrome, iron, plastic, rubber, laminate, tile, cardboard, glass, and MDF (Medium Density Fiberboard). The highest coefficient was observed on the aluminum surface (0.50), while the lowest was on MDF (0.33). The true density, seed volume, and porosity of the seeds were found to be 0.646 g cm⁻³, 4.080 cm³, and 62.027%, respectively. The determination of these parameters provides a scientific basis for the design of agricultural machinery for seed processing, thereby contributing to the efficiency of mechanical operations. Thus, identifying the geometric, gravimetric, and color properties of papaya seeds offers valuable contributions both to the scientific literature and to the growing papaya cultivation in Turkey.

Anahtar Kelimeler

• Papaya
• Pawpaw
• Papaya Seed
• Physical Properties

Kaynakça

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