ISOTERM ADSORPSI SERTA PENDUGAAN UMUR SIMPAN TEPUNG POLONG-POLONGAN INDIGENOUS INDONESIA

Authors

  • Rosiana Khoirunnissa Universitas Gadjah Mada
  • Andriati Ningrum Universitas Gadjah Mada
  • Aprilia Fitriani Universitas Gadjah Mada
  • Supriyadi Supriyadi Universitas Gadjah Mada https://orcid.org/0000-0002-0883-9148

DOI:

https://doi.org/10.21776/ub.jtp.2022.023.02.4

Keywords:

Isoterm Adsorpsi; Jengkol; Kabau; Lamtoro; Petai; Tepung; Umur simpan

Abstract

            Kabau, Jengkol, Petai dan Lamtoro merupakan komoditas polong-polongan indigenous Indonesia yang telah banyak dibudidayakan dan dikonsumsi sejak zaman dahulu, berkembang lama dan dikenal masyarakat di suatu daerah tertentu di Indonesia. Banyaknya kandungan gizi pada komoditas ini sehingga dapat dimanfaatkan menjadi produk baru seperti tepung. Tepung merupakan salah satu produk dengan kadar air rendah sehingga dapat bertahan lama apabila disimpan pada suhu ruang. Namun, tepung merupakan bahan pangan yang mempunyai kemampuan menyerap dan melepaskan sebagian air selama penyimpanan yang dapat menyebabkan terjadinya perubahan mutu tepung. Oleh sebab itu, penelitian ini bertujuan untuk menentukan permodelan kurva ISL yang tepat serta pendugaan umur simpan pada tepung Kabau, Jengkol, Petai dan Lamtoro dengan proses perebusan sebagai pengolahan pendahuluan. Ruang lingkup pengujian yaitu penentuan kadar air setimbang dengan menggunakan metode gravimetri statis. Penentuan model dan ketepatan kurva ISL, serta perhitungan pendugaan umur simpan sampel menggunakan persamaan Labuza (1982). Hasil penelitian menunjukkan bahwa GAB merupakan permodelan kurva yang hampir tepat dalam menggambarkan pola penyerapan uap air sampel. Perhitungan pendugaan umur simpan sampel bahan segar memiliki umur simpan lebih panjang dibandingkan sampel dengan perebusan. Hasil penelitian ini dapat digunakan sebagai acuan untuk pengembangan produk awetan dari keempat komoditas yang digunakan. Pembuatan produk awetan dapat memudahkan konsumen untuk tetap mengkonsumsi komoditas ini ketika terjadi kelangkaan bahan.

           

 

 

         

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

                                 Kabau, Jengkol, Petai and Lamtoro are indigenous Indonesian legume commodities have been widely cultivated and consumed since ancient times, have been growing for a long time and are known to the public in certain areas. The high nutritional content of this commodity can be process to a new product such as flour. Flour is a product with low moisture content so it can last a long time when stored at room temperature. However, flour is a product that has the ability to absorb and release moisture content during storage which can cause changes in flour quality. Therefore, this study aims to determine the appropriate ISL curve modelling and estimate the shelf life of Kabau, Jengkol, Petai and Lamtoro flours by pre-boiled processing. The scope of the test is to determine the equilibrium moisture content using the oven method. Determination of the model and the accuracy of the ISL curve and the calculation of the estimated shelf life of the sample using the Labuza equation (1982). The results showed that GAB is a curve model that almost accurately describes the sample's water vapour absorption pattern. Calculation of the estimated shelf life of samples with fresh ingredients has a longer shelf life than samples with pre-boiled treatment. The results of this study can be used as a reference for the development of preserved products from the four commodities used. The manufacture of preserved products can make it easier for consumers to continue to consume this commodity when there is a shortage of materials.

Author Biographies

Rosiana Khoirunnissa, Universitas Gadjah Mada

Departemen Teknologi Pangan dan Hasil Pertanian, Fakultas Teknologi Pertanian

 

Andriati Ningrum, Universitas Gadjah Mada

Departemen Teknologi Pangan dan Hasil Pertanian, Fakultas Teknologi Pertanian

 

Aprilia Fitriani, Universitas Gadjah Mada

Departemen Teknologi Pangan dan Hasil Pertanian, Fakultas Teknologi Pertanian

 

Supriyadi Supriyadi, Universitas Gadjah Mada

Departemen Teknologi Pangan dan Hasil Pertanian, Fakultas Teknologi Pertanian

 

References

Aini, -N., Prihananto, -V.,Wijonarko, -G., 2014. Karakteristik kurva isoterm sorpsi air tepung jagung instan. Agritech. 34(1), 50-55. https://doi.org/10.22146/agritech.9522

Andraede P, R, -D., Lemus M, -R., Perez C, C, -E., 2011. Models of sorption isotherms for food: Uses and limitations. Vitae. 18(3), 325-224. https://www.redalyc.org/pdf/1698/169822677013.pdf

Asikin, -Y., Kusumiyati, Taira, -E., Wada, -K., 2018. Alterations in the morphological, sugar composition, and volatile flavor properties of Petai (Parkia speciosa Hassk.) seed during ripening. Food Research International. 106, 647-653. https://doi.org/10.1016/j.foodres.2018.01.044

Chisté, R, -C., Silva, P, -A., Lopes, A, -S., Silva Pena, -R., 2012. Sorption isotherms of tapioca flour. International Journal of food Science & Technology. 47(4), 870-874. https://doi.org/10.1111/j.1365-2621.2011.02900.x

Dalgic, A, -C., Pekmez, -H., Belibagh, -K., 2012. Effect of drying methods on the moisture sorption isotherms and thermodynamic properties of mint leaves. Journal of Food Science and Technology. 49(4), 439-449. https://doi.org/10.1007/s13197-011-0302-7

Du, S, -K., Jiang, -H., Yu, -X., Jane, J, -L., 2014. Physicochemical and functional properties of ehole legume flour. LWT - Food Science and Technology. 55(1), 308-313. https://doi.org/10.1016/j.lwt.2013.06.001

Fitriani, -A., Santoso, -U., Supriyadi, -S., 2021. Conventional processing affects nutritional and antinutritional components and in vitro protein digestibility in Kabau. International Journal of Food Science. 21, 1-8. https://doi.org/10.1155/2021/3057805

Kusnandar, -F., Adawiyah, D, -R., Fitria, -M., 2010. Pendugaan umur simpan produk biskuit dengan metode akselerasi berdasarkan pendekatan kadar air kritis. Jurnal Teknologi Pangan dan Industri Pangan. 21(2), 117-122. https://journal.ipb.ac.id/index.php/jtip/article/view/3407

Labuza, T, -P., Kaanane, -A., Chen, J, -Y., 1985. Effect of temperature on the moisture sorption isotherms and water activity shift of two dehydrated foods. Journal of Food Science. 50(2), 385-392. https://doi.org/10.1111/j.1365-2621.1985.tb13409.x

Lancelot, -E., Fontaine, -J., Grua-Priol, -J., Le-Bail., -A., 2021. Effect of long-term storage conditions on wheat flour and bread baking properties. Food Chemistry. 346, 1-10. https://doi.org/10.1016/j.foodchem.2020.128902

Loredo, R, Y, -A., Hernandez, A, I, -R., Sanchez, E, -M., Aldapa, C, A, -G., Velazquez, -G., 2016. Effect of equilibrium moisture content on barrier, mechanical and thermal properties of chitosan films. Food Chemistry. 196, 560-566. https://doi.org/10.1016/j.foodchem.2015.09.065

Menkov, N, -D., Durakova, -A., 2007. Moisture sorption isotherms of sesame flour at several temperatrures. Food Technology and Biotechnology. 45(1), 96-100. https://hrcak.srce.hr/file/48177

Mohamed, -S., Abd. Rahman, M, -S., Sulaiman, -S., Abdullah, -F., 1987. Some nutritional and anti-nutritional components in jering (Phitecellobium jeringa), keredas (Pithecellobium microcarpum) and Petai (Parkia speciosa). Pertanika. 10(1), 61-68. https://eurekamag.com/research/006/445/006445376.php

Molla, M, -M., Kamal, M, -M., Sabuz, A, -A., Chowdury, F, M, -G., Khan, M, H, -H., Khatun, -A., Miaruddin, -M., Zashimuddin, -M., Islam, M, -M., 2021. Chemical composition, bioactive compounds, antioxidants potential and mycotoxin of minor exotic archidendron pauciflorum fruit with the focus to Bangladesh. Biocatalysis and Agricultural Biotechnology. 34, 1-10. https://doi.org/10.1016/j.bcab.2021.102039

Moreira, -R., Chenlo, -F., Torres, M, -D., Prieto, -D., 2010. Water adsorption and desorptio isotherms of chesnut and wheat flour. Industrial Corps and Products. 32(3), 252-257. https://doi.org/10.1016/j.indcrop.2010.04.021

Mustafidah, -C.,Widjarnako, S, -B., 2015. Umur simpan minuman serbuk berserat dari tepung porang (Amorpophallus oncophillus) dan karagenan melalui pendekatan kadar air kritis. Jurnal Pangan dan Agroindustri. 3(2), 650-660. https://jpa.ub.ac.id/index.php/jpa/article/view/186

Oyelade, O, -J., Tunde-Akintunde, T, -Y., Igbeka, J, -C., Oke, M, -O., Raji, O, -Y., 2008. Modelling moisture sorption isotherms for maize flour. Journal of Stored Products Research. 44(2), 179-185. https://doi.org/10.1016/j.jspr.2007.10.005

Ritonga, A, -M., Masrukhi., Siswantoro., 2018. Pendugaan umur simpan gula kelapa kristal menggunakan metode akselerasi berdasarkan pendekatan kadar air kritis. Jurnal Teknologi Pertanian. 21(1), 11-18. https://doi.org/10.21776/ub.jtp.2020.021

Sonaye, -S., Baxi, -R., 2012. Particle size measurement and analysis of flour. International Journal of Engineering Research and Aplications (IJERA). 2(3), 1839-1842. https://www.ijera.com/papers/Vol2_issue3/KZ2318391842.pdf

Sormoli, M, -E., Langrish, T, A, -G., 2015. Moisture sorption isotherms and net isosteric heat of sorption for spray-dried pure orange juice powder. LWT - Food Science and Technology. 62(1), 875-882. https://doi.org/10.1016/j.lwt.2014.09.064

Sridaran, -A., Karim, -A., Bhat, -R. 2012. Pithecellobium jiringa legume flour for potential food applications: Studies on their physico-chemical and functional properties. Food Chemistry. 130(3), 582-535. https://doi.org/10.1016/j.foodchem.2011.07.062

Suppakul, -P., Chalernsook, -B., Ratisuthawat, -B., Prapastitthi, -S., Munchukangwan, -N., 2013. Empirical modeling of moisture sorption characterictics and mechanical and barrier properties of cassava flour film and their relation to plasticizing-antiplasticizing effects. LWT - Food Science and Technology. 50(1), 290-297. https://doi.org/10.1016/j.lwt.2012.05.013

Susetyo, Y, -A., Hartini, -S., Cahyani, M, -N., 2016. Optimasi kandungan gizi tepung ubi jalar (Ipomoea batatas L.) terfermentasi ditinjau dari dosis penambahan inokulum angkak serta aplikasinya dalam pembuatan mie basah. Jurnal Aplikasi Teknologi Pangan. 5(2), 44-51. http://dx.doi.org/10.17728/jatp.172

Zapata, M, J, -E., Quintero, C, O, -A., Porras, B, L, -D., 2014. Sorption isotherms for oat flakes (Avenasativa L). Agronomía Colombiana. 32(1), 52-58. https://doi.org/10.15446/agron.colomb.v32n1.40652

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2022-08-31

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