Doğu Kayını (Fagus orientalis Lipsky.) Tohumlarının Kimyasal Bilesimi
Doğu kayını Türkiye’deki önemli ağaç türlerinden biridir. Tohumların kimyasal bilesimi, o tohumun fizyolojisi hakkında birçok ipucu verebilmektedir. Bu çalısmada Doğu kayını (Fagus orientalis Lipsky.) tohumlarının kimyasal bilesimi ve yağ asitleri kompozisyonu arastırılmıstır. Çalısmada dört orijin (Dokurcun, Giresun, Yozgat, Kahramanmaras) kullanılmıstır. Genel ortalama olarak Doğu kayını tohumu % 48,69 yağ, % 29,04 protein, % 3,16 nisasta ve % 4,10 kül içermektedir. Yağın % 88,44’ü doymamıs yağ asitlerinden olusmaktadır.Oleik asit (% 40,42) ve Linoleik asit (% 34,98) en fazla bulunan yağ asitleridir.
Chemical Composition of Oriental Beechnuts (Fagus orientalis Lipsky.)
Oriental beech (Fagus orientalis Lipsky.) is one of the important tree species in Turkey. Chemical composition of seeds may give clues about the seed physiology. In this study, chemical properties and fatty acid composition of oriental beechnut were investigated. The study was carried out on four origins (Dokurcun, Giresun, Yozgat, Kahramanmaras). This study showed that oriental beechnuts contain 48,69 % lipids, 29,04 % protein, 3,16 % starch, and 4,10 % ash (dry weight) in average. 88,44 % of the lipids of oriental beechnut was unsaturated fatty acids. Oleic acid (40,42 %) and linoleic acid (34,98 %) are two major fatty acids in lipids of beechnut.
___
- Anonymous 2003. Vermont Wildlife Harvest Report,
Black Bear. Vermont Fish and Wildlife Department,
Vermont, s.13-22.
- Anonim 2004. Endüstriyel Hizmet Kataloğu. Tübitak
Marmara Arastırma Merkezi, Gebze, 51s.
- Bewley, J.D., Black, M. 1994. Seeds: Physiology of
Development and Germination. Plenum Press, New
York, 445p.
- Bonner, F.T., Vozzo, J.A. 1987. Seed biology and
technology of Quercus. Gen. Tech.Rep. SO-66. New
Orleans, LA: USDA Forest Service, Southern Forest
Experiment Station.21p.
- Ching, T.M. 1972. Metabolism of Germinating Seeds.
(Kozlowski, T.T.) In: Seed Biology, Volume 2,
Academic Press, New York, pp.103-218.
- Copeland, L.O., McDonald, M.B. 1999. Seed Science and
Technology. Kluwer Ac. Pub. Boston, 409s.
- Crane, J., Miller, A.L., William, J., Roekel, V., Walters, C.
2003. Triacylglycerols determine the unusual storage
physiology of Cuphea seed. Planta, 217:699-708.
Dandik, L., Sahin, E., Karaosmanoğlu, F., Isığıgür, A.,
- Aksoy, H.A. 1992. Characteristics of beechnut oil
(Fagus orientalis Lipsky.) of Turkish origin. JAOCS,
69(12): 1274-1275.
- Fidanza, F. 2002. Tree nuts in the Mediterranean diet
context. II. Conferencia Salud Y Frutos Secos –
Fundacion Nucis, Barcelona, http://www.nucis.org/
pdf/nuts_fidanza_cmc.pdf. (Erisim: 04.04.2005).
- Jakubas, W.J. 2005. Alternate year beechnut production
and its influence on bear and marten populations.
In:(L.S. Kenefic ve M.J. Twery, edt.) Proceedings of
the New England Society of American Foresters 85th
Winter Meeting, Portland, Maine, March 16-18.
USDA, Forest Service, GTR NE-325, s.19.
- Küçüköner, E., Yurt, B. 2003. Some chemical
characteristics of Pistacia vera varieties produced in
Turkey. Eur. Food. Res. Tech. 217:308-310.
- Leadem, C.L. 1988. Dormancy and vigour of tree seeds.
Proceedings of The Combined Western Forestry
Nursery Council, Forest Nursery Association of B.C.,
and Intermountain Forest Nursery Association
Meeting; August 8-11, Vernon, B.C.
- Miquel, M., Browse, J. 1995. Lipid biosynthesis in
developing seeds. . In:”Seed Development and
Germination (J. Kigel ve G. Galili Edt.)”. Marcel
Dekker, Inc. New York, pp. 169-192.
- Nergiz, C., Dönmez, Đ. 2004. Chemical composition and
nutritive value of Pinus pinea L. seeds. Food
Chemistry, 86:365-368.
- Özdemir, M. 2001. Mathematical analysis of color changes
and chemical parameters of roasted hazelnuts. PhD
Thesis, Institute of Science and Technology, ITU,
175p.
- Savage, G.P. 2001. Chemical composition of walnuts
(Juglans regia L.) grown in New Zeland. Plant Foods
for Human Nutrition, 56:75-82.
- Wilson, D.O., McDonald, M.B. 1986. The lipid
peroxidation model of seed ageing. SST, 14:269-300.