Formulasi Serbuk Wedang Tahu dan Pendugaan Umur Simpan Menggunakan Metode Kadar Air Kritis
Abstract
Indonesia silken tofu dessert is a traditional dish made from silken tofu and ginger sauce. To enhance its shelf life, this study explored the development of silken tofu dessert into a powdered form. Traditionally, silken tofu is coagulated using calcium sulfate (CaSO₄), but there has been little research on the optimal concentration of CaSO₄ necessary for forming curd in powdered silken tofu comparable to the traditional version. This study aimed to identify the ideal concentration of CaSO₄ as a coagulant to be added to powdered silken tofu and to estimate its shelf life using the critical moisture method. Sensory testing was conducted to select the appropriate concentration of CaSO₄, comparing different levels to a control method. The results revealed significant differences between the powdered silken tofu dessert and the traditional counterpart. Among the three CaSO₄ concentrations tested (3, 5, and 7%), the dessert prepared with 3% CaSO₄ exhibited the closest resemblance to the traditional silken tofu dessert. A single serving of this powdered silken tofu dessert provides 125 kcal of total energy, accounting for 12% of the recommended daily allowance (RDA) for protein, 3% for total fat, and 6% for carbohydrates. When packaged in metallized plastic and stored at a relative humidity of 78% and a temperature of 30 °C, the shelf life of the powdered silken tofu dessert is extended up to 12 months.
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References
Agustiana, Adawyah R, Syifa M, Habibie R. 2021. Pengaruh lama fermentasi terhadap karakteristik kimia, organoleptik dan total plate count (TPC) cumi kering (Loligo sp.). J Pengolahan Hasil Perikanan Indonesia 24(2): 160–166. DOI: 10.17844/jphpi. v24i2.32911.
Alfiyani N, Wulandari W, Adawiyah DR. 2019. Validasi metode pendugaan umur simpan produk pangan renyah dengan metode kadar air kritis. J Mutu Pangan 6(1): 1–8. DOI: 10.29244/jmpi.2019.6.1.1.
[AOAC] Association of Official Analytical Chemist. 2012. Official Method of Analysis. AOAC International, Washington DC.
Aini N, Prihananto V, Wijonarko G. 2014. Karakteristik kurva isotherm sorpsi air tepung jagung instan. Agritech 34(1): 50–55. DOI: 10.22146/agritech.9522.
Ayu DF, Nurmadhona, Efendi R. 2023. Pendugaan umur simpan keripik nanas dengan pendekatan kurva isoterm sorpsi air. Agrointek 17(2): 365–373. DOI: 10.21107/agrointek.v17i2.14686.
Bell LN, Labuza TP. 2000. Moisture Sorption Practical Aspects of Isotherm Measurement and Use. The American Association of Cereal Chemist, Nashville.
[BPOM] Badan Pengawasan Obat dan Makanan Republik Indonesia. 2021. Peraturan Kepala Badan Pengawas Obat dan Makanan Nomor 26 Tahun 2021 Informasi Nilai Gizi pada Label Pangan Olahan. Jakarta: Badan Pengawas Obat dan Makanan.
[BSN] Badan Standardisasi Nasional. 2011. SNI 7612: 2011: Bubuk Minuman Kedelai. Jakarta: Badan Stan-dardisasi Nasional.
Erfandi W, Zainal, Salengke. 2018. Karakteristik susu kedelai bubuk yang diproses dengan pengeringan beku dan pengeringan vakum. J Agrisistem 14(2): 113–124.
Faridah DN, Yasni S, Suswantinah A, Aryani GW. 2013. Pendugaan umur simpan dengan metode accelerated shelf-life testing pada produk bandrek instan dan sirup buah pala (Myristica fragrans). J Ilmu Pertanian Indonesia 18(3): 144-153.
Firdausni F, Hermianti W, Kumar R. 2017. Pengaruh penggunaan sukrosa dan penstabil karboksi metil selulosa (CMC) terhadap mutu dan gingerol jahe Instan. J Litbang Industri 7(2): 137–146. DOI: 10.24960/jli.v7i2.3364.137-146.
Fan F, Roos YH. 2016. Crystalization and structural relaxation times in structural strength analysis of amorphous sugar or whey protein systems. J. Food Hydrocolloids 60: 85–97. DOI: 10.1016/j.foodhyd. 2016.03.019.
Jayadi A, Anwar B, Sukainah A. 2016. Pengaruh suhu penyimpanan dan jenis kemasan terhadap mutu abon ikan terbang. J Pendidikan Teknol Pertanian 2(1): 62–69.
Kim J-B, Cheong S-H. 2016. Physiochemical characteristics of functional tofu fortified with garlic (Allium sativum) and calcium lactate as coagulant. Res J Pharmaceutical, Biological, Chem Sci 7(1): 243–250.
Kusnandar F, Hemeninasari A, Adawiyah DR. 2016. Pen-dugaan umur simpan bumbu kuah bakso dengan metode akselerasi. J Mutu Pangan 3(1): 10–17.
Kurniawan YR, Pakpahan N, Purwanto YA, Purwanti N, Budijanto S. 2021. Stabilitas beras analog berdasarkan pola kadar air kesetimbangan. Pangan 30(2): 87–98. DOI: 10.33964/jp.v30i2.522.
Labuza TP. 1982. Shelf Life Dating of Foods. Food and Nutrition Press Inc, Westsport. ISBN: 978-0-91-767814-1.
Luampon R, Charmongkolpradit. 2019. Temperature and relatice humidity effect on equilibrium moisture content of cassava pulp. Res Agr Eng 65(1): 13–19. DOI: 10.17221/112/2017-RAE.
Meilgaard M. 2007. Sensory Evaluation Technique Fourth Edition. CRC Press, Boca Raton. ISBN: 987-0-42-919514-3.
Pakpahan N, Kusnandar F, Syamsir E, Maryati S. 2020. Pendugaan umur simpan kerupuk mentah tapioka dalam kemasan plastik polypropylene dan low density polyethylene menggunakan metode kadar air kritis. J Teknol Pangan 14(2): 52–62. DOI: 10.33005/jtp. v14i2.2454.
Palupi NS, Wardiani LI, Nurtama B. 2016. Optimasi formula kuah jahe dalam pengembangan wedang tahu sebagai pangan fungsional. J Teknol dan Industri Pangan 27(1): 95–104. DOI: 10.6066/jtip.2016.27.1.95.
Palupi NS, Zhafira NR, Nurtama B. 2019. Optimasi formula tahu lembut instan dan rasio rehidrasi dalam pengembangan wedang tahu sebagai pangan fungsional. J Mutu Pangan 6(2): 63–71. DOI: 10.29244/jmpi. 2019.6.63.
Palupi NS, Indrastuti NA, Uju, Syamsir E. 2020. Optimasi penggunaan karagenan dan kalsium sulfat pada pembuatan tahu sutra dalam pengembangan pangan fungsional. J Pengolahan Hasil Perikanan Indonesia 23(2): 272–285. DOI: 10.17844/jphpi.v23i2.30973.
Palupi NS, Widyanto R. 2020. Pengujian kapasitas anti-oksidan wedang tahu dalam rangka meningkatkan mutu fungsionalnya. J. Mutu Pangan 7(1): 46–51. DOI: 10.29244/jmpi.2020.7.1.46.
Purbasari D. 2019. Aplikasi metode foam-mat drying dalam pembuatan bubuk susu kedelai instan. J Agroteknologi 13(1): 52–61. DOI: 10.19184/j-agt.v13i01.9253.
Rifkowaty EE, Martanto. 2016. Minuman fungsional serbuk instan jahe dengan variasi penambahan bawang merah sebagai pewarna alami. J Teknik Pertanian Lampung 4(4): 315–324.
Ropiudin, Syska K. 2023. Pemodelan sorpsi isotermik dan pendugaan umur simpan gula kelapa kristal dalam kemasan plastik. J Agric Biosystem Eng Res 4(1): 23–24. DOI: 10.20884/1.jaber.2023.4.18462.
Syah D, Sitanggang AB, Faradilla RHF, Trisna V, Karsono Y, Septianita DA. 2014. The influences of coagulation conditions and storage protein on the textural properties of soy-curd (tofu). J Food 13(2): 259–263. DOI: 10.1080/19476337.2014.948071.
Sunyoto M, Djali M, Syafaah M. 2017. Pendugaan umur simpan kerupuk ikan dalam berbagai jenis kemasan dengan metode akselerasi melalui pendekatan kadar air kritis. J Penelitian Pangan 2(1): 55–63. DOI: 10. 24198/jp2.2017.vol2.1.08.
Swadana AE, Yuwono SS. 2014. Pendugaan umur simpan minuman berperisa apel menggunakan metode Accelerated Shelf Life Testing (ASLT) dengan pendekatan Arrhenius. J Pangan Agroindustri 2(3): 203–213.
Widjajaseputra AI, Widyastuti TEW, Suprijono MM, Trisnawati CY. 2020. Peran jenis dan konsentrasi koagulan pada karakteristik tahu dan tingkat peneri-maan konsumen. J Teknol Pangan Gizi 19(2): 114–122. DOI: 10.33508/jtph.v19i2.2871.
Widyanto R, Palupi NS, Refli R, Kahfi J, Prangdimurti E. 2018. Optimization of soft tofu and ginger drink formula as component of soft tofu dessert using response surface methodology (RSM). Int Food Res J 25(2): 1818–1828.
Zhang J, Wang J, Li M, Guo S, Lv Y. 2022. Effects of heat treatment on protein molecular structure and in vitro digestion in whole soybeans with different moisture content. Food Res Int 155: 111115. DOI: 10.1016/j.foodres.2022.111115.
