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      Penentuan Waktu dan Suhu Optimum Penyeduhan Daun Teh Wangi Melati terhadap Kadar Tanin dan Aktivitas Antioksidan

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      Date
      2024
      Author
      Putri, Ayundha Helma Tiana
      Andrianto, Dimas
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      Abstract
      Teh wangi melati adalah campuran teh hijau dan bunga melati, yang mengandung polifenol seperti flavonoid, katekin, dan tanin. Polifenol dalam teh berfungsi sebagai antioksidan untuk menangkal radikal bebas. Tanin dalam teh memberikan cita rasa khas. Tujuan penelitian adalah menentukan waktu dan suhu optimal penyeduhan terhadap kadar tanin dan aktivitas antioksidan. Metode ekstraksi teh wangi melati dengan cara melalui penyeduhan pada variasi suhu penyeduhan 60; 80; 100 °C dengan waktu 5; 10; 15; 20 menit. Kadar tanin diukur menggunakan metode Lowenthal-Procter dan spektrofotometri UV-Vis, sedangkan aktivitas antioksidan diukur dengan metode DPPH melalui IC50 dan vitamin C sebagai standar pembanding. Simpulan penelitian ini bahwa suhu dan waktu optimum untuk penyeduhan teh wangi melati yaitu 80 oC s-elama 20 menit dengan kadar tanin metode Lowenthal-Procter masing-masing 1123,311 g/mL dan 810,000 g/mL serta aktivitas antioksidan IC50 sebesar 1019,58 g/mL.
       
      Jasmine-scented tea is a blend of green tea and jasmine flowers, containing polyphenols such as flavonoids, catechins, and tannins. The polyphenols in tea act as antioxidants to combat free radicals, while tannins provide a distinctive taste. The objective of this study is to determine the optimal brewing time and temperature for tannin content and antioxidant activity. The extraction method involved brewing jasmine-scented tea at temperatures of 60, 80, and 100 °C for durations of 5, 10, 15, and 20 minutes. Tannin content was measured using the Lowenthal-Procter method and UV-Vis spectrophotometry, while antioxidant activity was measured using the DPPH method with IC50 and vitamin C as a reference standard. The conclusion is the optimal temperature and time for brewing jasmine scented tea are 80 oC for 20 minutes, with tannin content according ti the Lowenthal-Procter method being 1123.311 g/mL and 810.000 g/mL, respectively, and antioxidant activity IC50 of 1019.58 g/mL.
       
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      http://repository.ipb.ac.id/handle/123456789/157133
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      • UT - Chemistry Analysis [103]

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      Indonesia DSpace Group 
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