Effect of Time and Curing Concentration on Quantity and Quality of Goat Skin Gelatin Produced by Acid Process

Authors

  • M. I. Said
  • J. C. Likadja
  • M. Hatta

Abstract

Gelatin is widely used in food and non-food industries. One of its utilizations  in the food industry is as a biopolymer packaging materials to extend product shelf life. The quantity and quality of gelatin used is influenced by the production process, especially the curing period. This study aimed to determine the effect of curing time and concentration of curing agent  on the quantity and quality of gelatin produced from goat skin by acid process. Material used in this experiment was goat skin of Ettawah cross male, 1.5 to 3 years old.  The experiment was carried out in a 2x3 factorial arrangement according to completely randomized design with three replications for each treatment combination.  The first factor was curing time, i.e. 2 and 4 days and the second factor was the concentration of curing  agent, i.e. 3, 6 and 9%.  The gelatin was produced by the treatment with acetic acid (CH3COOH 0.5 M, v/v) as the curing  agent.  The results showed that application of CH3COOH 0.5 M with  concentration of 9% for 4 days yielded the best quantity and quality of gelatin, with product characteristics are yields of 16,39% and protein contents of  90.74%.

References

Anonim. 2008. Petunjuk Teknis Penyamakan Kulit. Departemen Perindustrian, Yogyakarta.

Anonim. 2006. Gelatine Manufacturers of Europe. http://www.gelatine.org ( 21 April 2008).

AOAC. 1995. Official Methods of Analysis of The Association Analytical Chemist. Inc., Washington DC.

Astawan, M dan T. Aviana. 2003. Pengaruh jenis larutan serta metode pengeringan terhadap sifat fisik, kimia dan fungsional gelatin dari kulit ikan cucut. Jurnal Teknologi dan Industri Pangan., Vol. XIV No. 1: 7-13.

Chen, H. 1995. Functional properties and applications of edible films made of milk proteins. J. of Dairy Sci., 78(11): 2563-2583.

de-Man, J.M. 1989. Kimia Makanan. Edisi Kedua. Penerjemah: K. Padmawinata. ITB Press, Bandung.

Giménez, B, M.C. Gómez-Guillén, and P. Montero. 2005. The role of salt washing of fish skins in chemical and rheological properties of gelatin extracted. Food Hydrocolloids., 19: 951-957.

Grobben, A.H., P.J. Steele, R.A. Somerville and D.M. Taylor. 2004. Inactivation of the bovine-spongiform-encephalopathy (BSE) agent by the acid and alkali processes used in the manufacture of bone gelatine. Biotechnology and Applied Biochemistry, 39: 329-338.

Hidaka, S and S.Y.Liu. 2002. Effect of gelatins on calcium phosphate precipitation: a possible application for distinguishing bovine bone gelatin from porcine skin gelatin. J. Food Composition and Analysis, 6: 477-483.

Hidayat, N. 2008. Gelatin. Pengembangan Produk dan Teknologi Proses. http://ptp2007. wordpress.com/(28 Oktober 2008).

Jaswir, I. 2007. Memahami Gelatin. Artikel Iptek. www.beritaiptek.com (2 November 2008).

Jobling, A. and C.A. Jobling. 1983. Conversation of bone to edible product. In : Upgrading Waste for Feed and Food, Eds. D.A. Ledwar, A.J. Taylor and R.A. Lawrie. Butterworths, London.

Karim, A.A. and R. Bhat. 2008a. Fish gelatin: properties, challenges, and prospects as an alternative to mammalian gelatins. Food Hydrocolloids, 3: 213-219.

Karim, A.A. and R. Bhat. 2008b. Gelatin alternatives for the food industry: recent developments, challenges and prospects. Trends in Food Sci. & Tech., 5: 100-107.

Kołodziejska, I., E. Skierka, M. Sadowska, W. Kołodziejski, and C. Niecikowska. 2007. Effect of extracting time and temperature on yield of gelatin from different fish offal. Food Chem., 107: 700-706.

Ockerman, H.W. and C.L. Hansen. 2000. Animal By Product Processing and Utilization. CRC Press, USA.

Rahmawati, H. 2008. Karakterisasi gelatin hasil ekstraksi kulit segar dan kering dari beberapa jenis ikan air laut dan tawar. Tesis. Program Studi Ilmu dan Teknologi Pangan. Sekolah Pascasarjana UGM, Yogyakarta.

Reineccius and Gary. 1998. Sourcebook of Flavors. Berlin, Springer.

Songchotikunpan, P., J. Tattiyakul, and P. Supaphol. 2007. Extraction and electrospinning of gelatin from fish skin. Internl. J. of Biological Macromolecules, 42: 247-255.

Sopian, I. 2002. Analisis sifat fisik, kimia dan fungsional gelatin yang diekstrak dari kulit dan tulang pari. Skripsi. Fakultas Teknologi Pertanian IPB, Bogor.

Steel, R.G.D and J.H.Torrie. 1991. Principle and Procedure of Statistics. 2nd ed. International Book Company, Tokyo.

Sudarmadji,S., B.Haryono, dan Suhardi. 2007. Analisa Bahan Makanan dan Pertanian. Edisi 2. Kerjasama Liberty, Yogyakarta dengan PAU Pangan dan Gizi, UGM, Yogyakarta

Syamsir, E. 2008. Aktivitas Air dan Pertumbuhan Mikroba. http://id.shvoong.com/exact-sciences/biology/1792972-aktivitas-air-dan-pertumbuhan-mikroba (23 Desember 2009).

Wang, L., B.Yang, X. Du, Y. Yang, and J. Liu. 2008. Optimization of conditions for extraction of acid-soluble collagen from grass carp (Ctenopharyngodon idella) by response surface methodology. Innovative Food Sci & Emerging Techn., 9: 604-607.

Wulandari, D. 2006. Ekstraksi dan karakteristik gelatin dari kulit kaki ayam. Program Studi Ilmu Peternakan. Tesis. Sekolah Pascasarjana UGM, Yogyakarta.

Yudhabuntara, D. 2008. Pengendalian Mikroorganisme dalam Bahan Pangan. http://milkordie. blogspot.com/2008/05/pengendalian-mikroorganisme-dalam-bahan.html (23 Desember 2009).

Zhou, P. and M.R. Joe. 2005. Effect of alkaline and acid pretreatments on alaska pollock skin gelatin extraction. J. Food Sci., 70: 392-396.

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2016-07-27

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