Determination of Some Physical and Nutritional Properties of Ostrich Meats Obtained from Different Muscles (Turkish with English Abstract)

Yıl 2011, Cilt: 36 Sayı: 5, 271 - 278, 01.10.2011

Sümeyra S. Tiske , Mustafa Karakaya

Öz

In this research, some physical and nutritional properties of bottom thigh, top thigh and top strip from ostriches were determined. Color values [CIE L* (brightness), a* (redness), b* (yellowness), chroma and hue angle], metmyoglobin, heme iron, total pigment and mineral contents and fatty acid compositions of these meat samples were determined. Highest and lowest L* values were obtained in top thigh and bottom thigh, respectively. Highest and lowest a* and b* values were obtained in top strip and bottom thigh, respectively. Generally, all meat samples were found as rich in palmitic, stearic, oleic and linoleic fatty acids; however, top thigh meats were found as considerably rich in epa and top strip meats were found as rich in arachidonic fatty acids. The potassium phosphors, magnesium and iron contents of meat samples were determined as high. In addition, top strip meats were found to have the highest total pigment and heme iron contents. The metmyoglobin contents of meat samples were determined to vary between 19.96-24.75 %.

Anahtar Kelimeler

Ostrich meat, color, metmyoglobin, mineral matter, fatty acid composition.

Farklı Kaslardan Elde Edilen Devekuşu Etlerinin Bazı Fiziksel ve Besinsel Özelliklerinin Belirlenmesi

Öz

Bu araştırmada devekuşu karkaslarına ait alt but, üst but, sırt etlerinin bazı fiziksel ve besinsel özellikleri belirlenmiştir. Bu örneklere ait renk değerleri (CIE L* (parlaklık), a* (kırmızılık) ve b* (sarılık), chroma ve hue angle), metmiyoglobin, hemedemir ve total pigment içerikleri ile et örneklerinin mineral madde ve yağ asidi kompozisyonları belirlenmiştir. Et çeşitleri arasında en yüksek L* değeri üst but etlerinde ölçülmüş olup, en düşük L* değeri ise alt but etlerinde; en yüksek a* ve b* değeri sırt etlerinde, en düşük a* ve b* değeri ise alt but etlerinde tespit edilmiştir. Et örneklerinin yağ asidi dağılımları incelendiğinde et örnekleri genel olarak palmitik, stearik, oleik ve linoleik yağ asitlerince oldukça zengin bir yapı göstermekle birlikte özellikle üst but etlerinin eikosapentaenoik asit (epa), sırt etlerinin araşidonik yağ asitlerince zengin olduğu tespit edilmiştir. Örneklerin; potasyum, fosfor, magnezyum ve demir içeriğinin yüksek olduğu belirlenmiştir. Ayrıca heme demir içeriği ve total pigmentlerce en zengin et çeşidinin yine sırt eti olduğu tespit edilmiştir. Et çeşitlerinin metmyoglobin içerikleri %19.96–24.75 arasında değişim göstermiştir.

Anahtar Kelimeler

Devekuşu eti, renk, metmyoglobin, mineral madde, yağ asidi kompozisyonu

Kaynakça

• Firat H. 2006. Devekuflu besleme ilkeleri. Ankara Üniversitesi Saglik Bilimleri Enstitüsü Yüksek Lisans Tezi, Ankara, Türkiye
• Bulut N. 2006. Devekuflu etinin bazi besinsel ve fonksiyonel özellikleri üzerine araflt›rma. Ankara Üniversitesi Fen Bilimleri Enstitüsü Yüksek Lisans Tezi, Ankara, Türkiye
• Sales J. 1996. Histological, Biophysical, Physical and Chemical Characteristics of Different Ostrich Muscles. J Agric Food Chem, 70: 109-114.
• Kolsarici N, Candogan K. 2002. Devekuflu Eti. Standart, Nisan, 35-39.
• Hunt MC, Acton JC, Benedict RC, Calkins CR, Cornforth DP, Jeremiah LE, Olson DP, Salm CP, Savell JW, Shivas SD. 1991. Guideliness For Meat Color Evaluation. Chicago. Am. Meat Sci. Association and National Live Stock and Meat Board.
• Hornsey HC. 1956. The Colour of Cooked Cured Pork. I.-Estimation of The Nitric OxideHaem Pigments. J Agric Food Chem, 7: 534-540.
• Lee BJ, Hendricks DGN, Cornforth DP. 1999. A Comparison of Carnosine and Ascorbic Acid on Color and Lipid Stability in A Ground Beef Pattie Model System. Meat Sci, 245-253.
• Clark EM, Mahoney AW, Carpenter CE. 1997. Heme and Total Iron in Ready-to-eat Chicken. J Agric Food Chem, 45: 124-126.
• Krzywicki K. 1982. The Determination of Haem Pigment in Meat. Meat Sci, 7: 29-35.
• Yazicioglu T, Karaali A. 1983. Türk bitkisel yaglarinin yag asitleri bileflimleri. TÜBITAK. Marmara Bilimsel ve Endüstriyel Arafltirma Enstitüsü. Beslenme ve Gida Teknolojisi Bölümü. Yayin No: 70, Gebze, Kocaeli.
• AOAC, 2000. Official Methods of Analysis of AOAC International (17th ed.). AOAC International Suite Suit 500, 481 North Frederick Avenue Gaithersburg. Maryland, 2417–2877, USA.
• Skujins S. 1998. Handbook for ICP-AES (Varian -Vista). A Short Guide to Visa Series ICP-AES Operation. Variant Int. Ag. Zug, Version 1.0, Switzerland.
• Steel RGD, Torrie JH. 1980. Principle and procedures of statistic: A biometrical approach. New York: McGraw-Hill.
• Hoffman LC, Fisher PP. 2001. Comparison of the Meat Quality Characteristics Between Young and Old Ostriches, Meat Sci, 59 (3): 335–337.
• Otremba MM, Dikeman ME, Boyle EAE. 1999. Shelf-life of Vacuum Packaged, Previously Frozen Ostrich Meat. Meat Sci, 52: 279–283.
• Paleari MA, Camisasca S, Beretta G, Renon P, Carsico P, Bertolo G, Crivelli G. 1997. Ostrich meat: Physico-Chemical Characteristics and Comparison with Turkey and Bovine Meat. Meat Sci, 48, (3/4): 205-210.
• Serdaroglu, M., ve Turp, G. Y., 2001. Yeni bir gida olarak Devekuflu eti. Hayvansal Üretim, 42, 2, 37–44.
• Sales J, Horbanczuk J. 1998. Ratite Meat. World Poult Sci J, 54: 59-67.
• Ramos A, Cabrera MC, del Puerto M, Saadoun A. 2009. Minerals, Haem and Non-haem Iron Contents of Rhea Meat. Meat Science, 81: 116–119.
• Boccia GL, Dominguez BM, Aguzzi A. 2002. Total Heme and Non-heme Iron in Raw and Cooked Meats. J Food Sci Food Chem and Toxicol, 67 (5): 1738–1741.
• Frontczak M, Krysztofiak K, Bilska A, Uchman W. 2006. Characteristics of fat from African ostrich Sutruthio camelus. Institute of Meat Technology University of Life Sciences in Poznan, Poland.
• Grompone MA, Irigaray B, Gil M. 2005. Uruguayan Nandu (Rhea americana) oil: A Comparison with Emu and Ostrich Oils. JAOCS, 82 (9): 687–689.
• Girolami A, Marsico I, D’Andrea G, Braghieri A, Napolitano F, Cifuni GF. 2003. Fatty Acid Profile, Cholesterol Content and Tenderness of Ostrich Meat as Influenced by Age at Slaughter and Muscle Type. Meat Sci, 64: 309–315.
• Sales J. 1998. Fatty Acid Composition and Cholesterol Content of Different Ostrich Muscles. Meat Sci, 49: 489-492.
• Harris SD, Morris CA, Jackson TC, May SG, Lucia LM, Hale DS, Miller RK, Keeton JT, Savell JW, Acuff GR. 1993. Ostrich meat industry development. American Ostrich Association. Texas Agric. Ext. Ser. 348 Kleberg.
• Horbanczuk JO, Cooper RG, Jozwik A, Klewiec J, Kryzewski J, Malecki I, Chylinski W, Wojcik A, Kawka M. 2003. Cholesterol content and fatty acid composition of fat from culled breeding ostriches (Struthio camelus). Animal Sci. Papers and Reports, 21. 4, 271–275. Inst. of Genetics and Animal Breeding, Jastzebiec, Poland.
• Boccia GL, Lanzi S, Aguzzi A. 2005. Aspects of meat quality: Trace elements and B vitamins in raw and cooked meats. J Food Compos Anal, 18, 39–46.