1Program Studi DIII Teknik Kimia, Diponegoro University, Indonesia
2Jurusan Teknik Kimia, Universitas Pandanaran, Indonesia
3Fakultas MIPA, Universitas Negeri Semarang, Indonesia
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@article{JKSA17491, author = {Mohamad Yulianto and Fahmi Arifan and Didik Ariwibowo and Indah Hartati and Dewi Mustikaningtyas}, title = {Pengembangan Proses Inaktivasi Enzim Polifenol Oksidase untuk Produksi Teh Hijau Berkatekin Tinggi}, journal = {Jurnal Kimia Sains dan Aplikasi}, volume = {10}, number = {1}, year = {2007}, keywords = {Steaming; teh hijau}, abstract = {Teh merupakan bahan minuman penyegar alami yang menyehatkan karena di dalamnya terkandung senyawa katekin yang merupakan senyawa bioaktif yang dapat menghambat pertumbuhan sel kanker, mengurangi kemungkinan timbulnya penyakit jantung, darah dan pembuluh darah, menyehatkan pencernaan makanan, mulut dan gigi serta beberapa penyakit infeksi lain. Oleh karena itu kadar katekin tinggi di dalam teh sangat diharapkan. Untuk memperoleh kadar katekin tinggi harus menghilangkan proses oksidasi polifenol secara enzimatik pada saat pengolahan daun teh. Untuk keperluan itu dirancang suatu proses dan sistem pemroses yang mendukung kondisi pengolahan tersebut. Dasar perancangan yang dipilih adalah inaktivasi enzim polifenol oksidase dengan cara steaming. Teh yang dihasilkan diharapkan merupakan teh berkatekin tinggi yang selain dapat langsung dikonsumsi dapat pula dijadikan bahan baku bubuk katekin untuk preparat dietary food dan fungctional food atau obat. Kajian sistem pemroses ini melibatkan variabel-variabel persen uap panas yang digunakan, kapasitas daun teh dan spray uap air. Parameter yang akan diamati adalah temperatur sistem, kadar katekin, kadar air, dan kelembaban sistem proses yang merupakan fungsi waktu. Hasil proses steaming daun teh menunjukkan bahwa pada temperatur 90 0 C, diperoleh katekin dengan kadar relatif tinggi. Hasil kajian juga menunjukkan bahwa kelembaban 70% didapatkan kadar katekin relatif tinggi dengan kadar air relatif rendah.}, issn = {2597-9914}, pages = {24--30} doi = {10.14710/jksa.10.1.24-30}, url = {https://ejournal.undip.ac.id/index.php/ksa/article/view/17491} }
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