Pengembangan Edible Coating Berbasis Pati Singkong yang Diperkaya Antioksidan dari Ekstrak Kulit Bawang Merah untuk Memperpanjang Umur Simpan Jamur Tiram (Pleurotus ostreatus)
Rina Nur Aini, Dr. Fahrizal Yusuf Affandi, S.T.P., M.Sc.
2026 | Tugas Akhir | D4 Pengembangan Produk Agroindustri
Jamur
tiram (Pleurotus ostreatus) merupakan komoditas hortikultura yang
memiliki nilai gizi yang tinggi, namun memiliki umur simpan yang pendek 1-2
hari pada suhu ruang karena kadar air dan laju respirasi yang tinggi.
Penelitian ini bertujuan untuk mengevaluasi pengaruh edible coating berbasis
pati singkong yang diperkaya ekstrak kulit bawang merah terhadap karakteristik
mekanik edible film, aktivitas antioksidan edible coating, aplikasi
edible coating pada jamur tiram selama penyimpanan. Larutan edible coating dibuat dari 3,5% pati singkong dan 1,75%
gliserol, dengan variasi konsentrasi ekstrak kulit bawang merah sebesar 0%,
0,5%, 1%, dan 1,5%. Hasil penelitian menunjukkan bahwa peningkatan konsentrasi
ekstrak meningkatkan ketebalan film dan nilai water vapor transmission rate (WVTR),
namun semua konsentrasi memenuhi syarat optimum ketebalan (? 0,25 mm) dan
memenuhi batas maksimal WVTR (? 7
g/m².jam). Pada uji aktivitas antioksidan, perlakuan 1,5% menghasilkan nilai <!--[if gte msEquation 12]>
Oyster mushrooms (Pleurotus ostreatus) are a horticultural commodity that has high nutritional value, but has a short shelf life of 1-2 days at room temperature due to its high moisture content and respiration rate. This study aims to evaluate the effect of cassava starch-based edible coating enriched with onion peel extract on the mechanical characteristics of edible film, edible coating antioxidant activity, edible coating application on oyster mushrooms during storage. The edible coating solution is made from 3.5?ssava starch and 1.75% glycerol, with variations in the concentration of onion peel extract of 0%, 0.5%, 1%, and 1.5%. The results showed that increased extract concentrations increased the film thickness and WVTR values, but all concentrations met the optimum thickness requirements (? 0.25 mm) and met the maximum limit of water vapor transmission rate (WVTR), (? 7 g/m².hr). In the antioxidant activity test, the 1.5% treatment yielded a very strong value of 62.56 ppm. However, statistically the response rate of respiration and weight loss showed no noticeable difference between treatments due to the high natural metabolic rate of the fungus.
Kata Kunci : Antioksidan, Ekstrak kulit bawang merah, Edible coating, Jamur tiram / Antioxidant, Onion peel extract, Edible coating, Oyster mushroom