The Effect of Natrium Bisulfite Addition and Ethanol Dehydration to the Quality of Porang (Amorphophallus muelleri Blume) Flour

Gunawan Pasaribu, Totok Kartono Waluyo, Novitri Hastuti, Gustan Pari, Emma Sahara

Abstract


Porang (Amorphophallus muelleri Blume) is an alternative food sources from forest. Porang grows under forest canopy and potentially developed to improve food security. Naturally harvested porang contains high oxalate and less glucomannan. This paper observes possible quality improvement of porang flour in term of whiteness and glucomannan content. Porang collected from Nganjuk, East Java was quality tested and mixed with natrium bisulfite then rinse in ethanol repetitively. Results showed that the addition of sodium bisulfite improved the whiteness of porang flour for about 6.59%. Ethanol dehydration proces was able to improve glucomannan content from 12.86% to 38.11%. Fe and Ca content of mixed porang flour showed no significant difference. Porang flour from Nganjuk contained of 1,6-Anhydro- Beta-D-Glucopyranose; 1,2,3,4-Cyclopentanetetrol,(1.alpha., 2.beta., 3.beta., 4.alpha.); cyclopropyl carbinol; aceticacid(CAS)ethylicacid; and hexadecanoic acid.


Keywords


Porang; whiteness; glucomannan; natrium bisulfite; ethanol

References


Badan Litbang Pertanian. (2015). Technology of instant corn flour. Leaflet. Bogor: Badan Litbang Pertanian.

Desrorier, N.W. (1988). Teknologi pengawetan pangan. Cetakan I (terj.: Harjo, M.M.). Jakarta: UI Press.

Gu, W. & Silverman, R.B. (2011). Synthesis of (S)-2- Boc-Amino-8-(R)-(tertbutyldimethylsilanyloxy) decanoic acid, a precursor to the unusual amino acid residue of the anticancer agent microsporin B. Tetrahedron Letters 52, 5438-5440.

Harkin, J.M & Rowe, J.W. (1971). Bark and its possible uses. Research Note. Forest Products Laboratory, Wisconsin: USDA. 2-21.

Husniati & Adi, W.A. (2010). Analisis fasa dan struktur mikro pada tepung tapioka dengan penambahan natrium metabisulfit. Jurnal Sains Materi Indonesia, 13,(2), 83-89.

Jian, W., Chai-Siu, K., & Yong Wu, J. (2015). Effects of pH and temperature on colloidal properties and molecular characteristic of konjac glucomannan. Carbohydrate Polymers, 134, 285-292.

Keputusan Menteri Kesehatan. (2002). Angka kecukupan gizi bagi bangsa Indonesia. (SK Kemenkes No. 913/Menkes/SK/VII/ 2002)

Mulyono, E. (2010). Peningkatan mutu tepung iles-iles (Amorphophallus oncophyllus) Peningkatan mutu tepung iles-iles (Amorp. oncophyllus sebagai bahan pengelastis mi dan pengental melalui teknologi pencucian bertingkat dan enzimatis kapasitas produksi 250 k umbi/hari. Laporan Akhir Penelitian. Bogor: Balai Besar Penelitian dan Pengembangan Pascapanen Pertanian.

Nindita, I., Amalia, N., & Hargono. (2012). Ekstraksi glukomanan dari tanaman ilesiles (Amorphopalus oncophyllus) dengan pelarut air dan penjernih karbon aktif. Jurnal Teknologi Kimia dan Industri, 1,(1), 59-63.

Peraturan Menteri Kehutanan. (2007). Hasil hutan bukan kayu. (Permenhut No. 35, 2007).

Prayudi, R. J. (1988). Pengaruh perlakuan perendaman NaHSO3 dan vitamin C dalam mencegah reaksi pencoklatan selama ekstraksi pati sagu (Metroxylon sp.). (Skripsi Sarjana). Fakultas Teknologi Pertanian, IPB, Bogor.

Purnomo, D. (2007). Kebutuhan pangan, ketersediaan lahan pertanian dan potensi tanaman. Pidato pengukuhan guru besar ekologi tanaman Fakultas Pertanian Universitas Sebelas Maret. 24 November 2007.

Purwadaria, H.K., Syarif, A.M., Bukhori, Widyotomo, S., Arifin, M.A., & Sulyaden. (2002). Pengembangan proses fraksinasi untuk meningkatkan mutu tepung iles-iles (konjac flour) untuk ekspor. Fakultas Teknologi Pertanian, Institut Pertanian Bogor, Bogor.

Pusatlitbang Porang Indonesia. (2013). Modul diseminasi budidaya dan pengembangan porang (Amorphopallus muelleri Blume) sebagai salah satu potensi bahan baku lokal. Malang: Universitas Brawijaya.

Siregar, R.J.H. (2011). Pengaruh perbandingan tepung terigu pada roti. Diakses dari http://repository.usu.ac.id/bitstream/123 456789/22564/4/Chapter%20II.pdf. Standardisasi Nasional

Indonesia. (SNI). (2013). Serpih Porang. (SNI 7939-2013. Badan Standarisasi Nasional.

Whistler, R.L. BeMiller J.N. & Paschall, E.F. (1984). Starch: Chemistry and technology. Toronto. Tokyo: Academic Press. Inc.




DOI: https://doi.org/10.20886/jphh.2016.34.3.241-248

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