Phytochemicals, Nutrient Levels and Antioxidants of Various Types of Sweet Potatoes (Ipomoea batatas L.)
Keywords:
Phytochemical, Sweet potatoes, Flavonoids, Antioxidant capacity, Purple sweet potatoesAbstract
This study aims to identify the phytochemical compounds, including flavonoids, tannins, phenols, beta-carotene, anthocyanins, and fiber, as well as the antioxidant capacity of various types of sweet potatoes. Method: The research followed a descriptive observational design with laboratory-based testing. The identification of phytochemical compounds utilized specific reagents. One Way ANOVA was employed to assess the differences in average levels of phytochemicals, nutrients, and antioxidant capacity (IC50) among the different types of sweet potatoes with normally distributed data. The determination of flavonoid, tannin, phenol, beta-carotene, and anthocyanin levels was carried out using UV/Vis Spectrophotometry at specific wavelengths. Crude fiber content was determined using the gravimetric method, while the antioxidant capacity was measured using the DPPH (2,2-Diphenyl-1-Picrylhydrazyl) method. Results: The findings indicated that all types of sweet potatoes contain alkaloids, while some lack steroids. Purple sweet potatoes showed the highest levels of flavonoids, tannins, and phenols at 627.27, 1727.27, and 1507.14 mg/100 g, significantly differing from other types of sweet potatoes (p = 0.00). Besides, purple sweet potatoes exhibited the highest anthocyanin content (18.35 mg/100 g) compared to other types, showing a significant difference (p = 0.00). Orange sweet potatoes exhibited the highest levels of beta-carotene and fiber, at 15.49 and 5.63 mg/100 g, respectively, although the difference was not statistically significant (p = 0.83). The antioxidant capacity (IC50) of purple, orange, white, and yellow sweet potatoes were 45.13, 266.59, 190.01, and 210.73 ppm, respectively. Conclusion: Different varieties of sweet potatoes exhibit variations in phytochemical composition and antioxidant capacity. Purple sweet potatoes are rich in flavonoids, tannins, phenols, and anthocyanins, with significant antioxidant potential. Orange sweet potatoes show high levels of beta-carotene and fiber but have comparable antioxidant activity to white and yellow varieties
References
Safari A, Rahayu SD, Fadhlillah M, Saadah, Rachman, Nenden I, et al. Ekstraksi dan Penentuan Aktivitas Antioksidan Ubi Jalar Ungu (Ipomoea batatas L). Al-Kimia : Universitas Padjajaran. 2019;6 No. 2:46–51.
Surya A. Uji Aktivitas Antioksidan pada Ubi Jalar Kuning (Ipomoea batatas L.) dengan Metode DPPH (1,1-Difenil-2-Pikrilhidrazil). Akademi Analis Kesehatan : Pekanbaru. 2017;
Lesmanawati W, Widanarni, Sukenda, Purbiantoro W. Potensi Ekstrak Oligosakarida Ubi Jalar Sebagai Prebiotik Bakteri Probiotik Akuakultur. Institut Pertanian Bogor. 2013;3 (1):16–20.
K’osambo LM, Carey EE, Misra AK, Wilkes J, Hagenimana V. Influence of Age, Farming Site, and Boiling on Pro-Vitamin A Content in Sweet Potato (Ipomoea batatas (L.) Lam.) Storage Roots. J Food Tech Afr. 1999;4(3).
Meludu NT. Proximate Analysis of Sweet Potato Toasted Granules. Afr J Biomed Res. 2010;13:89–91.
Nurdjanah S, Yuliana N. Ubi Jalar Teknologi Produksi Dan Karakteristik Tepung Ubi Jalar Ungu Termodifikasi. 2019;85.
Harborne JB. Metode Fitokimia, Penuntun Cara Modern Menganalisis Tumbuhan terjemahan K. Padmawinata dan Soediro, I. Edisi II. Bandung: Institut Pertanian Bogor; 1987.
Ahmad A, Waode A. Study of Antioxidant Activity and Determination of phenol and Flavonoid Content of Pepino’s Leaf Extract (Solanum muricatum Aiton). International Journal of PharmTech. 2014;600-606.
Chang C, Yang M, Wen Hand CJ. Estimation of Total Flavonoid Content in Propolis by Two Complementary Colorimetric Method. J Food Drug Anal. 2002;
Mu’nisa A, Wresdiyati T, Kusumorini N, Manalu. Aktivitas Antioksidan Ekstrak Daun Cengkeh. Jurnal Veteriner. 2012;13(3):272–7.
Nurhayati SK, Harjono. Pengaruh Konsentrasi Natrium Benzoat dan Lama Penyimpanan pada Kadar Fenolat Total Pasta Tomat. Indonesian Journal of Chemistry Science. 2012;1(2):158–63.
Jie L, Xiao-ding L, Yun Z, Zheng-dong Z, Zhi-ya O, Meng L, et al. Identification and thermal stability of purple-fleshed sweet potato anthocyanins in aqueous solutions with various pH values dan fruit juices. Food Chemistry. 2013;136:1429–34.
Lee J, Durst W, Wrolstad RE. Determination of total monomeric anthicyanin pigment content of fruit juices, beverages, natural colorants, and wines by the pH differential method. Collaborative study Journal of AOAC International. 2005;88:1269–78.
Ritter ED, Purcell AE. Carotenoids Analytical Methods. Academic Inc London. 2009;
Herbert RB. Biosintesis Metabolit Sekunder. Semarang: IKIP Press; 1995.
Satiti W. Uji Aktivitas Antioksidan dan Skrining Fitokimia Ekstrak Metanol Empat Variasi Umbi Jalar (Ipmoea batatas (L.) Lam) dengan Metode DPPH (2,2-Diphenyl-1-Picrylhydrazyl) [Skripsi]. [Surakarta]: Program Studi Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Sebelas Maret; 2015.
Babby A, Elanchezhiyan C, Suhasini S, Chandirasegaran G. Antihyperglycemic Effect Of Tannic Acid In Streptozotocin Induced Diabetic Rats. International Journal Current Research. 2014 Mar;6(03):5386–98.
Wang A, Li R, Ren L, Gao X, Zhang Y, Ma Z, et al. A comparative metabolomics study of flavonoids in sweet potato with different flesh colors (Ipomoea batatas(L.) Lam. Food Chemistry. 2018;260:124–34.
Grace MH, Yousef GG, Gustafson SJ, Truong VD, Yencho GC, Lila MA. Phytochemical changes in phenolics, anthocyanins, ascorbic acid, and carotenoids associated with sweetpotato storage and impacts on bioactive properties. Food Chemistry. 2014;145 (4):714–24.
Teow CC, Truong VD, McFeeters RF, Thompson RL, Pecota K, Craig Yencho G. Antioxidant activities, phenolic and b-carotene contents of sweet potato genotypes with varying flesh colours. Food Chemistry. 2006;103 (2007):828–38.
Sriarumtias FF. Pengukuran Kadar Betakaroten Dan Fenol Total Buah Pepino Kuning (Solanum muricatum Aiton) Pada Tingkat Kematangan Yang Berbeda. Jurnal Farmako Bahari. 2016;7 No. 2:12–21.
Kemal NN, Karim A, Asmawati, Seniwati. Analisis Kandungan Β-Karoten Dan Vitamin C Dari Berbagai Varietas Ubi Jalar (Ipomoea batatas). Indonesia Chimica Acta, Jurusan Kimia FMIPA, Universitas Hasanudin. 2013;
Sabuluntika N, Ayustaningwarno F. Pengaruh variasi pemberian Snack bar ubi jalar kedelai hitam terhadap Kadar uperoksida Dismutase (SOD) darah. Jurnal Gizi Indonesia. 2014 Desember;3 Nomor 1:20–5.
Rahayu P, Fathonah S, Meddiati F. Daya Terima dan Kandungan Gizi Makanan Berbahan Dasar Ubi Jalar Ungu. FSCE. 2012;1(1):2252–6587.
Winarno FG. Kimia Pangan dan Zat Gizi. Jakarta: Gramedia Pustaka Utama; 2004.
Suprapta DN. Aqueous extract of purple sweet potato increased sod-2, and sod-3 expression on human umbilical vein endothelial cells in vitro. Journal of Biology, Agriculture and Healthcare. 2016;6 (2):103–10.
Muchtadi D, Astawan M, Palupi NS. Metabolisme Zat Gizi Pangan. Tangerang: Universitas Terbuka; 2016.
Blois MS. Antioxidant determination by the use of stable free radical. Nature. 2005;181:1191–200.
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