Komposisi Kimia Ubi Jalar (Ipomoea batatas L) Cilembu pada Berbagai Waktu Simpan sebagai Bahan Baku Gula Cair Chemical Composition of Cilembu Sweet Potato (Ipomoea batatas L) at Various Storage Time as Raw Material of Liquid Sugar
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Abstract
Ubi jalar (Ipomoea batatas L) Cilembu memiliki karakteristik yang khas yaitu rasanya sangat manis. Ubi jalar Cilembu yang memenuhi kualitas ekspor hanya 50 persen dari hasil panen, dan sisanya masih belum banyak dimanfaatkan. Ubi jalar biasanya disimpan terlebih dahulu sebelum diolah. Ubi jalar dapat digunakan sebagai bahan baku pembuatan gula cair. Ubi jalar Cilembu sebagai bahan baku gula cair dapat berupa pati atau bubur. Tujuan dari penelitian ini adalah untuk menentukan waktu penyimpanan ubi jalar Cilembu yang paling tepat, sehingga memiliki komposisi kimia yang tepat sebagai bahan baku gula cair. Metode yang digunakan adalah metode eksperimen. Masa penyimpanan ubi jalar Cilembu 0, 2, 4 dan 6 minggu. Penyimpanan dilakukan pada suhu ruang di dalam ruangan dengan sirkulasi udara, kelembaban 80-88 persen. Hasil penelitian menunjukkan waktu penyimpanan mempengaruhi kadar air, pati dan gula ubi jalar. Kesimpulan penelitian ini adalah waktu penyimpanan ubi jalar Cilembu yang paling tepat sebagai bahan baku gula cair berupa pati dan berupa bubur dengan masa simpan ubi jalar 0 minggu. Tindak lanjut dari penelitian ini adalah optimasi produksi gula cair dari pati dan bubur yang berasal dari ubi jalar Cilembu dengan masa simpan 0 minggu.
Cilembu Sweet potatoes (Ipomoea batatas L), which taste very sweet, have distinctive
characteristics. Only 50 percents of Cilembu sweet potatoes that meet export quality, while the rest are rarely used. Sweet potatoes as the raw material of liquid sugar are usually stored before being processed. Cilembu sweet potatoes as raw material of liquid sugar can be either formed in starch or slurry. The purpose of this study is to determine the most appropriate storage time of Cilembu sweet potato tuber. The method used is an experimental method. The storage time is varied from zero to six weeks. The storage is conducted at a room with air circulation and humidity of 80-88 percent. The results indicate the storage time affects the water content, starch compotition and total of sweet potato. The conclusion of this study is that the most appropriate storage time for Cilembu sweet potato as a raw material of liquid sugar in the form of slurry and starch is in the 0-week storage period. The follow-up of this study is the optimization of the liquid sugar production from starch and slurry derived from Cilembu sweet potato with 0-week storage period.
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References
Aina, A.J., Falade, K.O., Akingbala, J.O., & Titus P.2009. Physicochemical properties of twenty-one Caribbean sweetpotato cultivars. International Journal of Food Science and Technology. 44:1696–1704.
AOAC. 1995. Official Methods of Analysis of the Association of Analytical Chemists, Washington D.C.
Apriyantono A, Fardiaz D, Puspitasari NL, Yasni S,Budjanto S. 1989. Analisis Pangan. Bogor : IPB Press.
BPS. 2011. Produksi Ubi Jalar per Provinsi Tahun 2011. Biro Pusat Statistik dan Ditjen Bina Produksi Tanaman Pangan 2011. http:www.bps.go.id/sector/agri/pangan/table2.shtml.
Chen, Z., Schols, H.A., & Voragen, A.G.J. 2003. Starch granule size strongly determines starch noodle processing and noodle quality. Journal of Food Science 68: 1584–1589.
Ega, L. 2002. Kajian beberapa sifat fisik dan pola hidrolisis pati ubi jalar jenis CIP secara enzimatis dan asam [Disertasi]. Bogor: Program Pasca Sarjana, Institut Pertanian Bogor.
Garcia, A.M., & Walter, W.M. 1998. Physicochemical characterization of starch from Peruvian sweetpotato selections. Starke/Starch 50: 331–337.
Hidayat, B., Ahza A.B., Sugiyono. 2007. Karakteristik tepung ubi jalar (Ipomoea batatas L.) varietas Shiroyutaka serta kajian potensi penggunaannya sebagai sumber pangan karbohidrat alternatif.
Jurnal Teknologi dan Industri Pangan 18 (1): 32-39.
Honestin, T. 2007. Karakterisasi sifat fisikokimia tepung ubi jalar [Skripsi]. Bogor: Departemen Ilmu dan Teknologi Pangan Fateta, Institut Pertanian Bogor.
Johnson,R., Padmaja, G., Moorthy, S.N. 2009. Comparative production of glucose and high fructose syrup from cassava and sweet potato roots by direct conversion techniques. Innovative Food Science and Emerging Technologies 10:616–620
Juanda, D., dan B. Cahyono. 2000. Ubi jalar, budidaya dan analisis usaha tani. Yogyakarta:Kanisius.
Julita, A.O. 2012. Karakterisasi tepung dan pati dari ubi jalar Cilembu dan ubi jalar ungu Ayamurasaki [Skripsi]. Bogor : Fakultas Teknologi Pertanian, Institut Pertanian B. Bogor.
Kearsley and Dziedzic. 1995. Handbook of Starch Hydrolisis Product and Their Derivatives. Glasgow: Blackie Academic & Professional.
Kusnandar, F. 2010. Kimia Pangan Komponen Makro. Jakarta : Dian Rakyat.
Mahasukhonthachat, K., Sopade, P.A., & Gidley, M.J.2010. Kinetics of starch digestion in sorghum as affected by particle size. Journal of Food Engineering 96: 18–28.
Noda, T., Kobayashi, T., & Suda, I. 2001. Effect of soil temperature on starch properties of sweetpotato. Carbohydrate Polymers 44: 239–246.
Osundahunsi, O.F., Fagbemi, T.N., Kesselman, E., & Shimoni, E. 2003. Comparison of the physicochemical properties and pasting characteristics of flour and starch from red and white sweetpotato cultivars. Journal of Agricultural and Food Chemistry 51: 2232–2236.
Onggo, T.M. 2006. Perubahan komposisi pati dan gula dua jenis ubi jalar Nirkum “Cilembu” Selama 64 PANGAN, Vol. 23 No. 1 Maret 2014 : 53 - 64 peyimpanan. Jurnal Bionatura 8 (2): 161-170.
Ravindran, V., Ravindran, G., Sivakanesan, R., & Rajaguru, S.B. 1995. Biochemical and nutritional assessment of tubers from 16 cultivars of sweetpotato. Journal of Agricultural and Food Chemistry 43: 2646–2651.
Richana, N. 2006. Gula Singkong Dapat Diproduksi di Pedesaan. Warta Penelitian dan Pengembangan Pertanian. (28) 3.
Rukmana, R. 1997. Ubi jalar : Budidaya dan Pasca Panen. Yogyakarta: Kanisius.
Sopade, P.A., Kuipa, W., & Risimeri, J.B. 2001. Evaluation of selected food properties of white yam in PNG. Papua New Guinea Journal of
Agriculture, Forestry and Fisheries 44: 33–43.
Tamate, J., & Bradbury, J.H. 1985. Determination of sugars in tropical root crops using 13C N.m.r spectroscopy: comparison with the
HPLC method. Journal of Science of Food and Agriculture 36: 1291–1302.
Teow, C.C., Truong, V., Feeters, R., Thompson, R.L.,Pecota, K.P., Yencho, G.C. 2007. Antioxidant activities, phenolic and b-carotene contents of sweet potato genotypes with varying flesh colours. Food Chemistry. 103: 829–838.
Tian, J.S., Rickard, J.E., & Blanshard, J.M.V.1991. Physico-chemical properties of sweet potato starch. Journal of Science of Food and
Agriculture 57: 459–491.
Tomlins, K., Owori, C., Bechoff, A., Menya, G.,Westby, A. 2012. Relationship among the carotenoid content, dry matter content and
sensory attributes of sweet potato. Food Chemistry 131: 14–21
Van Hung, P., Morita, N. 2005. Effects of Granule Sizes on Physicochemical Properties of Crosslinked and Acetylated Wheat Starches. Starch – Stärke 57:413-420
Waramboi, J.G., Dennien, S., Gidley, J.M., Sopade,A.P. 2011. Characterisation of sweetpotato from Papua New Guinea and Australia: Physicochemical, pasting and gelatinisation properties. Food Chemistry 126: 1759–1770.
Wida dan Fatonah. 2002. Optimasi produksi selai dengan bahan dasar ubi jalar Cilembu. Tersedia
di http://repository.ipb.ac.id/handle/123456789/16320
Zhang, T and Oates, C.G. 1999. Relationship between _-amylase degradation and physicochemical properties of sweet potato starches. Food Chemistry (65) 157-163
Zhang, Z., Wheatley, C.C., Corke, H. 2002. Biochemical changes during storage of sweet potato roots differing in dry matter content.
Postharvest Biology and Technology 24: 317–325.