Utilization of Canna Edulis (Ganyong) Starch as an Edible Coating for Tomato Fruits
DOI:
https://doi.org/10.26877/jiphp.v10i1.764Keywords:
canna starch, edible coating, postharvest quality, tomato fruitAbstract
This study aimed to evaluate the effect of canna (ganyong, Canna edulis Ker.) starch-based edible coating on the postharvest quality of tomatoes and to determine the optimal starch concentration for shelf-life extension. The novelty of this research lies in the application of ganyong starch—a locally underutilized Indonesian tuberous crop with high amylose content (32.53%)—as a functional edible coating matrix. The study employed a Completely Randomized Design (CRD) with five treatment levels (P0: control/no coating; P1: 1% w/v; P2: 1.5% w/v; P3: 2% w/v; P4: 2.5% w/v ganyong starch) and three replications, yielding 15 experimental units each consisting of five uniform tomato fruits (75 fruits total). Prior to ANOVA, data normality was verified using the Shapiro–Wilk test and variance homogeneity was confirmed using Levene's test. Analysis of Variance (ANOVA) followed by Duncan's New Multiple Range Test (DNMRT) at the 5% significance level was applied independently at each observation day (days 0, 4, 8, 12, 16, and 20). Results demonstrated that the 2.5% w/v ganyong starch coating (P4) was the most effective treatment, significantly reducing weight loss (12.41%), maintaining firmness (4.16 kgf/cm²), stabilizing pH within the physiological range (4.00), and preserving vitamin C content (4.40 mg/100 g) relative to the uncoated control. Hedonic evaluation (30 panelists) gave the 2.5% coating the highest acceptance scores for firmness (3.13, "somewhat like") and color (3.00, "somewhat like").
References
Andriani, E.S., Nurwanto, dan A. Hintono. 2018. Perubahan Fisik Tomat Selama Penyimpanan pada Suhu Ruang Akibat Pelapisan dengan Agar-Agar. Jurnal Teknologi Pangan. 2(2): 176–182.
Anggarini, D., N. Hidayat, dan A.F. Mulyadi. 2016. Pemanfaatan Pati Ganyong sebagai Bahan Baku Edible Coating dan Aplikasinya pada Penyimpanan Buah Apel Anna (Malus sylvestris) (Kajian Konsentrasi Pati Ganyong dan Gliserol). Jurnal Teknologi dan Manajemen Agroindustri. 5(1): 1–8.
Anita, Z., F. Akbar, dan H. Harahap. 2013. Pengaruh Penambahan Gliserol terhadap Sifat Mekanik Film Plastik Biodegradasi dari Pati Kulit Singkong. Jurnal Teknik Kimia USU. 2(2): 37–41.
Badan Pusat Statistik Indonesia. 2022. Statistik Tanaman Sayuran dan Buah-Buahan Semusim. Badan Pusat Statistik Indonesia. Jakarta.
Breemer, R., P. Picauly, dan N. Hasan. 2017. Pengaruh Edible Coating Berbahan Dasar Pati Sagu Tuni (Metroxylon rumphii) terhadap Mutu Buah Tomat Selama Penyimpanan. Jurnal Teknologi Pertanian. 6(1): 1–10.
Darmajana, D.A., N. Afifah, E. Solihah, dan N. Indriyanti. 2017. Pengaruh Pelapis dapat Dimakan dari Karagenan terhadap Mutu Melon Potong dalam Penyimpanan Dingin. Jurnal Agritech. 37(3): 280–287.
Ifmalinda, O.C. Chatib, dan D.M. Soparani. 2019. Aplikasi Edible Coating Pati Singkong pada Buah Pepaya (Carica papaya L.) Terolah Minimal Selama Penyimpanan. Jurnal Teknologi Pertanian Andalas. 23(1): 19–29.
Knee, M. 2002. Fruit Quality and its Biological Basis. Sheffield Academic Press. Sheffield, UK. 280 pp. [Ref tambahan: bahas alkalinisasi pH pada stadium senesen lanjut]
Prasetyo, A.E., A. Widhi, dan W. Widayat. 2012. Potensi Gliserol dalam Pembuatan Turunan Gliserol Melalui Proses Esterifikasi. Jurnal Ilmu Lingkungan. 10(1): 26–33.
Suhartini, T. dan Hadiatmi. 2010. Keragaman Karakter Morfologi Tanaman Ganyong. Buletin Plasma Nutfah. 16(2): 118–125.
Susilowati, P.E., A. Fitri, dan M. Natsir. 2017. Penggunaan Pektin Kulit Buah Kakao sebagai Edible Coating pada Kualitas Buah Tomat dan Masa Simpan. Jurnal Aplikasi Teknologi Pangan. 6(2): 1–4.
Yousuf, B., O. Qadri, dan A.S. Srivastava. 2021. Recent Developments in Shelf-Life Extension of Fresh-Cut Fruits and Vegetables by Application of Different Edible Coatings: A Review. LWT – Food Science and Technology. 140: 110582. https://doi.org/10.1016/j.lwt.2020.110582.
Zhu, H., Z. Zheng, L. Zhao, Y. Li, dan X. Han. 2022. Application of Starch-Based Edible Coatings for Preservation of Fruits and Vegetables: A Review. Foods. 11(19): 3016. https://doi.org/10.3390/foods11193016.
