Putri, Dianita Devi (2015) Pengaruh Suhu Dan Waktu Ekstraksi Terhadap Kadar Kafein Dalam Teh Hitam. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Pada penelitian ini telah dibuktikan bahwa kadar
kafein di dalam teh hitam dipengaruhi oleh kondisi ekstraksi
diantaranya yaitu suhu dan waktu ekstraksi. Suhu yang digunakan
pada penelitian ini yaitu suhu dengan pemanasan 70°C dan 100°C
serta suhu tanpa pemanasan yaitu 27°C. Sedangkan rentang waktu
yang digunakan pada suhu 70°C dan 100°C adalah 0,5 menit –
4,0 menit dengan interval waktu 30 detik. Pada suhu 27°C
diberikan variasi waktu 0,5 jam, 1 jam, 1,5 jam, 2 jam, 4 jam, 8
jam dan 16 jam. Kadar kafein tertinggi ditemukan pada suhu
ekstraksi tertinggi yaitu 100°C. Semakin panjang waktu ekstraksi
dapat membuat kadar kafein di dalam teh semakin tinggi yaitu
19,305 mg/g saat waktu ekstraksi 4 jam di suhu 27°C; 29,403
mg/g saat waktu ekstraksi 3,5 menit di suhu 70°C dan 31,280
mg/g saat waktu ekstraksi 4 menit di suhu 100°C.
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In this study has been demonstrated that the levels of
caffeine in black tea is affected by the extraction conditions such
as temperature and time. The temperature used in this research
that the heating temperature of 70°C and 100°C and temperature
without heating at 27°C. While the time frame used at a
temperature of 70°C and 100°C was 0.5 minutes-4.0 minutes at
intervals of 30 seconds. At a temperature of 27°C is given
variation 0.5 hours, 1 hour, 1.5 hours, 2 hours, 4 hours, 8 hours
and 16 hours. The highest caffeine content is found at the highest
extraction temperature of 100°C. The longest extraction time also
can make highest of caffeine content in black tea that is 19.305
mg/g at the time of extraction 4 hours at a temperature of 27 ° C;
29.403 mg/g at the time of extraction 3.5 minutes at a temperature
of 70°C and 31.280 mg/g while the extraction time 4 minutes at a
temperature of 100°C.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSKi 660.284 2 Put p |
| Uncontrolled Keywords: | kafein, teh, suhu, waktu, ekstraksi |
| Subjects: | Q Science > QD Chemistry > QD63 Extraction |
| Divisions: | Faculty of Mathematics and Science > Chemistry > 47201-(S1) Undergraduate Thesis |
| Depositing User: | Yeni Anita Gonti |
| Date Deposited: | 24 Feb 2020 04:22 |
| Last Modified: | 24 Feb 2020 04:22 |
| URI: | http://repository.its.ac.id/id/eprint/75134 |
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