Jurnal pangan nasional "terakreditasi" Kemeristekdikti dari Indonesian Food Technologists® - IFT

DOI: https://doi.org/10.17728/jatp.2224

Perubahan Antosianin dan Aktivitas Antioksidan Tepung Uwi Ungu selama Penyimpanan

*Siti Tamaroh  -  Program Studi Teknologi Hasil Pertanian, Fakultas Agroindustri, Universitas Mercu Buana, Yogyakarta, Indonesia
Sri Raharjo  -  Jurusan Teknologi Pengolahan Hasil Pertanian, Fakultas Teknologi Pertanian, Universitas Gadjah Mada, Yogyakarta, Indonesia
Agnes Murdiati  -  Jurusan Teknologi Pengolahan Hasil Pertanian, Fakultas Teknologi Pertanian, Universitas Gadjah Mada, Yogyakarta, Indonesia
Sri Anggrahini  -  Jurusan Teknologi Pengolahan Hasil Pertanian, Fakultas Teknologi Pertanian, Universitas Gadjah Mada, Yogyakarta, Indonesia

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Abstract

Uwi ungu (Dioscorea alata L) merupakan bahan pangan yang berpotensi sebagai sumber antioksidan alami, karena adanya komponen antosianin dan senyawa fenolik. Penelitian ini bertujuan mengetahui perubahan komponen tepung uwi ungu selama penyimpanan pada kondisi ruang simpan berbeda. Penyimpanan tepung uwi ungu disimpan pada ruang berukuran 60x60x60 cm3 yang diberi perlakuan lampu 150 lux (ruang KL) dan tanpa perlakuan lampu (TKL). Kelembaban udara (RH) ruang simpan dicatat pada saat penyimpanan. Penyimpanan dilakukan selama 25 hari, setiap 5 hari dilakukan uji pada kadar air, kadar antosianin, kadar fenolik, aktivitas antioksidan (%RSA). Data yang diperoleh diuji statistik dengan ANOVA, jika ada beda nyata diuji dengan DNMRT pada tingkat kepercayaan 5%. Hasil penelitian menunjukkan bahwa RH ruang simpan kondisi KL stabil (65%) dan RH ruang simpan TKL berubah-ubah (antara 77–85%). Penyimpanan pada ruang KL dapat menyebabkan peningkatan kadar air, penurunan kadar antosianin, penurunan kadar senyawa fenolik dan aktivitas antioksidan (%RSA) yang lebih rendah dibanding penurunan pada penyimpanan ruang TKL. Penyimpanan tepung uwi ungu pada hari ke-10 menunjukkan peningkatan kadar air, penurunan kadar antosianin, kadar fenolik dan aktivitas antioksidan yang signifikan. Komponen penyusun tepung uwi setelah penyimpanan 10 hari pada kondisi KL sebagai berikut; kadar air 15,5 %, kadar antosianin 56,24 mg/100 g bk, kadar senyawa fenolik 104,2 mg EGA/100 g bk dan aktivitas antioksidan 75,42%  (% RSA). Kesimpulannya, oleh karena ruang simpan KL terbukti menekan penurunan kadar air, kadar antosianin, kadar senyawa fenolik dan aktivitas antioksidan dibanding penyimpanan pada ruang TKL, maka tepung uwi ungu lebih baik disimpan dalam ruang KL.

Antocyanin and Antioxidant Activity Purple Yam Flour Changes During Storage

Abstract

The purple yam (Dioscorea alata L) is a food that has the potential as a source of natural antioxidants, because of the anthocyanin and phenolic component. The objective of this research is to know the change of purple yam flour component during storage at different  room storage. In this study, the purple yam flour was stored in the space size 60x60x60 cm3, with lamp 150 lux (LT) and without lamp (KLT). Room relative humidity (RH) was recorded. Purple yam flour was stored for 25 days. Analysis of the moisture content, anthocyanin concentration, phenolic concentration, antioxidant activity (% RSA ) was done in every 5 days. The data were statistically analized by ANOVA method, if there were significant difference were followed by Duncan Multiple Range Test at 5% confidence level. The results showed that KL provided stabil relative himidity (65%) and TKL provided much less stabil relative himidity (77–85%). Stored purple yam at KL room increased water content, decreased anthocyanin, phenolic compounds and antioxidant activity (% RSA). These changes generated lower value than that of in storage of TKL room. Storage purple yam flour on 10 days increased water content, decreased anthocyanin and phenolic levels, and antioxidant activity, significantly. Purple yam flour components after 10 days storage at KL room provided composition as follows: moisture content of 15.5%,  anthocyanin content of 56.24 mg/100g db,  phenolic compounds EGA of 104.2 mg/100 g bk and antioxidant activity of 75.42%. As conclusion, KL provided better storage of purple yam than TKL.

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Keywords: Kata kunci : tepung uwi ungu, penyimpanan, antosianin, fenolik, aktivitas antioksidan

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Section: Artikel Penelitian (Research Article)
Language : EN
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  8. Fang, Z., Wua, D., Yü, D., Ye, X., Liu, D., Chen, J. 2011. Phenolic compounds in chinese purple yam and changes during vacuum frying. Food Chemistry 128:943–948. DOI: 10.1016/j.foodchem.2011.03.123
  9. Garzóna, G.A., Wrolstad, R.E. 2001. The stability of pelargonidin-based anthocyanins at varying water activity. Food Chemistry 75 (2) : 185-196. DOI: 10.1016/S0308-8146(01)00196-0
  10. Giusti, M.M., Wrolstad, R.E. 1996. Characterization of red radish antocyanin. Journal of Food Science 61(2):322 -326
  11. Hapsari, R.T. 2014. Prospek uwi sebagai pangan fungsional dan bahan diversifikasi pangan. Buletin Palawija 27:26-38
  12. Hsu, C.L. Chen, W., Weng, Y.M., Tseng, C.Y. 2003. Chemical composition, physical properties, and antioxidant activities of yam flours as affected by different drying methods. Food Chemistry 83(1):85-92. DOI: 10.1016/S0308-8146(03)00053-0
  13. Htwe, N.N., Srilaong, V., Tanprasert, K., Tongchitpakdee, K.S., Kanlayanarat .S., Uthairatanakijet, A. 2010. Effects of storage time and temperature on radical scavenging activities and bioactive compounds in colored rice varieties. Journal of Food, Agriculture & Environment 8(3): 26–31
  14. Jackman, R.L., Smith, J.L. 1996. Anthocyanins and Betalains. In: Hendry, G.A.F., Hougton, J.D. Natural Food Colorants Second Edition p 243-280. Chapman and Hall, London
  15. Jiménez, N., Bohuon, P., Dornier, Bonazzic, M.C., Pérez, A.M. Vaillant, F. 2012. Effect of water activity on anthocyanin degradation and browning kinetics at high temperatures (100–140 °C). Food Research International 47(1): 106-115. DOI: 10.1016/j.foodres.2012.02.004
  16. Kita, A., Bąkowska-Barczak, A., Hamouz, K., Kułakowska, K., Grażyna Lisińska, G. 2013. The effect of frying on anthocyanin stability and antioxidant activity of crisps from red- and purple-fleshed potatoes (Solanum tuberosum L.). Journal of Food Composition and Analysis 32:169–175. DOI: 10.1016/j.jfca.2013.09.006
  17. Kohartono, G., Sutedja, A.M. Widyawati, P.S. 2014. Perubahan kadar senyawa bioaktif dan aktivitas antioksidan beras organik hitam varietas Jawa dengan pengemas polipropilen selama enam bulan penyimpanan. Jurnal Teknologi Pangan dan Gizi 13(2): 69-74
  18. Leo, L., Leone, A., Longo, C., Lombardi, D.A., Raimo, F., Zacheo, G., 2008. Antioxidant compounds and antioxidant activity in ‘‘early potatoes’’. Journal of Agricultural and Food Chemistry 56: 4154–4163. DOI: 10.1021/jf073322w
  19. Lubag, A.J.M., Antonio, Jr., Laurena, C., Tecson-Mendoza, E.M. 2008. Antioxidants of purple and white greater Yam (Dioscorea alata L.) varieties from the Philippines. Philippine Journal of Science:137(1): 61-67
  20. Markakis, P. 1982. Anthocyanin as food colors. Academic Press, New York
  21. Moraga, G., Igual, M., García-Martínez, E., Mosquera, L.H., Martínez, N. 2012. Effect of relative humidity and storage time on the bioactive compounds and functional properties of grapefruit powder. Journal of Food Engineering 112 (3): 191-199. DOI: 10.1016/j.jfoodeng.2012.04.002
  22. Nina, K.C.J., Ghislaine, D.C. Hubert, K.K., Désiré Patrice, A.Y., Patrice, K.L., Alphonse, K. 2017. Biochemical and functional properties of yam flour during the post-harvest conservation of Dioscorea alata cultivar Azaguié. Current Journal of Applied Science and Technology 21(6):1–10. DOI: 10.9734/CJAST/2017/32404
  23. Obiegbuna, J.E, Okeke, A.U.G., Igwe, E.C. 2014. Effect of storage relative humidity on some chemical composition and browning development of treated Cocoyam (Colocasia esculenta) corm flour. Journal of Scientific Research and Reports 3(4):592-609. DOI: 10.9734/JSRR/2014/7132
  24. Osunde, Z.D. 2008. Minimizing postharvest losses in Yam (Dioscorea spp.): Treatments and techniques. Food Science and Technology to Improve Nutrition and Promote National Development, International Union of Food Science & Technology
  25. Tonon, R.V., Brabet, C., Hubinger, M.D. 2010. Anthocyanin stability and antioxidant activity of spray-dried acai (Euterper oleracea Mart.) juice produced with different carrier agents. Food Research International 43:907–914. DOI: 10.1016/j.foodres.2009.12.013
  26. Rein, M.J. 2005. Copigments reaction and color stability of berry anthocyanins. Disertation at University of Helsinki
  27. Roy, M.K., Juneja, L.R., Isobe, S., Tsushida, T. 2009. Steam processed broccoli (Brassica oleracea) has higher antioxidant activity in chemical and cellular assaysystems. Food Chemistry 114:263-269. DOI: 10.1016/j.foodchem.2008.09.050
  28. Sakthidevi, G., Mohan, V.R. 2013. Total phenolic, flavonoid contents and in vitro antioxidant activity of Dioscorea alata L. Tuber. Journal of Pharmaceutical Science and Research 5(5):115 – 119
  29. Shao, Y., Xu, F., Sun, X., Bao, J., Beta, T. 2014. Identification and quantification of phenolic acid and anthocyanins as antioxidants in bran, embryo and endosperm of white, red and black rice kernels (Oryza sativa L.). Journal of Food Cereal Science 59:211 – 218
  30. Udensi, E.A., Oselebe, H.O., Onuoha, A.U. 2010. Antinutritional assessment of D. alata varieties. Pakistan Journal of Nutrition 9(2): 179-181. DOI: 10.3923/pjn.2010.179.181
  31. Xu, B.J., Chang, S.K.C. 2007. A comparative study on phenolic profiles and antioxidant activities of legumes affected by extraction. Journal of Food Science. 72: SI 59-66. DOI: 10.1111/j.1750-3841.2006.00260.x

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