Yurica Desmonda, 1114071056 (2015) PENGARUH KALIUM PERMANGANAT DENGAN ABSORBEN BERBAGAI MASSA ARANG KAYU TERHADAP SIFAT FISIK DAN KIMIA BUAH JAMBU BIJI (Psidium guajava L.) ‘CRYSTAL’ SELAMA PENYIMPANAN PADA SUHU RUANG DAN SUHU RENDAH. Fakultas Pertanian, Universitas Lampung.
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Abstrak (Berisi Bastraknya saja, Judul dan Nama Tidak Boleh di Masukan)
Jambu biji (Psidium guajava L.) ‘crystal’ termasuk buah klimakterik yang mengalami perubahan pola respirasi yang mendadak sebelum terjadinya proses kelayuan, sehingga memiliki umur simpan pendek. Salah satu faktor internal yang mempengaruhi respirasi buah yaitu etilen. Salah satu cara memperlambat proses pematangan dilakukan pengoksidasian etilen dengan menggunakan kalium permanganat (KMnO4) dan arang kayu sawo sebagai bahan pembawanya. Tujuan penelitian ini adalah (1) Mengetahui massa arang+KMnO4 terbaik selama penyimpanan pada suhu ruang (26° - 30°C) dan suhu rendah (10° - 12°C), (2) Mengamati perubahan fisik dan kimia buah jambu biji ‘crystal’ selama penyimpanan, dan (3) Umur simpan buah jambu biji ‘crystal’ selama penyimpanan. Penelitian ini menggunakan Rancangan Acak Lengkap 5 perlakuan pada masing-masing suhu yaitu 2g arang + KMnO4, 4g arang + KMnO4, 6g arang + KMnO4, 8g arang + KMnO4, 10g arang + KMnO4. Hasil penelitian menunjukkan bahwa penggunaan KMnO4 sebagai pengoksidasi etilen mampu memperlambat penurunan kekerasan, dan peningkatan kandungan padatan terlarut. Perlakuan terbaik penyimpanan suhu ruang adalah Ta1 (2g arang+ KMnO4). Pada akhir penyimpanan (hari ke-18) buah memiliki nilai susut bobot 25,34%, kekerasan 2,24N, kandungan padatan terlarut 10,84°Brix dan untuk kadar vitamin C 44mg/100g. Perlakuan terbaik penyimpanan suhu rendah adalah Tc1(2g arang+ KMnO4). Pada akhir penyimpanan (hari ke-36) buah memiliki nilai susut bobot 28,02%, kekerasan 2,12N, kandungan padatan terlarut 11,34°Brix dan untuk kadar vitamin C 38,13mg/100g. Hasil analisis statistik pada α = 5 % pada penyimpanan suhu ruang, perlakuan berpengaruh nyata terhadap parameter kandungan padatan terlarut, sedangkan pada suhu rendah perlakuan berpengaruh nyata terhadap parameter kekerasan dan kandungan padatan terlarut. Kata kunci: jambu biji ‘crystal’, larutan KMnO4, etilen, arang kayu. ABSTRACT THE INFLUENCE PERMANGANATE POTASSIUM WITH ABSORBENT WOOD CHARCOAL VARIOUS MASS AGAINTS THE CHARACTER OF PHYSICAL AND CHEMICAL OF ‘CRYSTAL’ GUAVA FRUIT (Psidium guajava L.) DURING THE STORAGE AT ROOM’S TEMPERATURE AND LOW TEMPERATURES Crystal Guava fruit (Psidium guajava L.) is klimakterik fruit that change in respiration pattern suddenly before the withering process, so it has a short shelf life. One of internal factors that affect the respiration of fruit is ethylene. One of the ways to slow down the maturation process is by oxidizing ethylene using permanganate potassium (KMnO4) and sapodilla wood charcoal as the material of carrier. The aimed of this research were (1) to find out the best of charcoal mass +KMnO4 during the storage at room’s temperature (26° - 30°C) and low temperatures (10° - 12°C), (2) to observe the physical and chemical change of crystal guava fruit and (3) the shelf life of crystal guava fruit during the storage. This research used random complete design with 5 treatment in each temperature, namely 2g charcoal + KMnO4, 4g charcoal + KMnO4, 6g charcoal + KMnO4, 8g charcoal + KMnO4, 10g charcoal + KMnO4. The result showed that the use of KMnO4 as the Oxidize of ethylene was able to slow the violence decline and the increase of dissolved solids content. The best treatment of room’s temperature storage was Ta1 (2g charcoal + KMnO4). On the last of storage (day 18th) the fruit had a value 25, 34% weight loss, 2, 24N hardness, 10,84 °Brix dissolved solids content and 44mg/100g vitamin C level. The best treatment of low temperature storage was Tc1 (2g charcoal + KMnO4). On the last of storage (day 36th) the fruit had a value 28, 02% weight loss, 2,12N hardness, 11,34 °Brix dissolved solids content and 38,13mg/100g vitamin C level. Results of statistical analysis at α = 5 % of storage at room’s temperature, the treatment significantly affected the parameters of dissolved solids content, while at low temperature the treatment significantly affected parameters of hardness and dissolved solids content . Keyword: crystal guava, KMnO4 solution, ethylene, charcoal.
| Jenis Karya Akhir: | Skripsi |
|---|---|
| Subyek: | > Pertanian ( Umum ) |
| Program Studi: | Fakultas Pertanian dan Pascasarjana > Prodi Teknik Pertanian |
| Pengguna Deposit: | 3669554 . Digilib |
| Date Deposited: | 26 Oct 2015 02:29 |
| Terakhir diubah: | 26 Oct 2015 02:29 |
| URI: | http://digilib.unila.ac.id/id/eprint/13929 |
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