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Journal : Jurnal Syntax Transformation

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Effect of Hot Breaking and Cold Breaking on the Rheology of Tomato Paste (Lycopersicon Esculentum Mill) Selpiah; Salengke; Iqbal
Jurnal Syntax Transformation Vol 6 No 5 (2025): Jurnal Syntax Transformation
Publisher : CV. Syntax Corporation Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46799/jst.v6i5.1072

Abstract

Tomato paste quality hinges on processing methods, with hot break (95°C) and cold break (65°C) treatments critically impacting rheology and shelf life. Prior studies lack comprehensive analysis of prolonged heating durations and storage effects on viscosity stability. This study examines how hot/cold break treatments influence tomato paste rheology, enzyme activity (PME, PG), and storage stability to identify optimal processing parameters. Tomatoes were heated at 65°C (cold break) or 95°C (hot break) for 5–15 minutes, processed into paste, and stored for 5 weeks. Rheological properties (flow index *n*, consistency coefficient *k*) were measured weekly using a viscometer (30–60°C), while PME/PG activities were assayed titrimetrically and via DNS. Hot break at 45°C with 10-minute heating yielded the highest viscosity stability (*n* = 0.3685, *k* = 1.478) and extended shelf life by reducing microbes. PG enzymes were more heat-resistant than PME, with cold break showing higher residual activity (27.72% PME, 35% PG after 5 weeks). Storage revealed pseudoplastic degradation, with 60°C treatments exhibiting drastic *k*-value declines (~50%). The 10-minute hot break at 45°C is recommended for industrial tomato paste production to balance viscosity and shelf life. Future research should explore hybrid thermal treatments to enhance nutritional retention, building on findings by Wang et al. (2023).
Co-Authors -, Febriana Intan Permata Hati Achmad Rusdi Agusti, Eddy Al-falathi, Siti Aminah Aman, Ahmad Asrul Saputra Badaruddin Dedi Kusuma Habibie Desember, Faried Diyah Yumeina Djuniadi Djuniadi Fadhil Surur Farida, Anif Fariyani Fariyani, Fariyani Farizal Farizawati Fauziansyah Febriyani, Tika Galuh Indra Hasniatisari Haurissa, Prita Husnul Mubarak IAN YULIANTI Intan Zuhra Irwan T jabul reski, fadhil Joko Nugroho Wahyu Karyadi Junaedi Muhidong Kahar Kahar, Kahar kamaludin, ade Laurencia Vivin Monica LINDAWATI Mahmud Achmad Mahyuddin Maidi Saputra Maulidiyah, Rafiqah Mauliza, Suci Muh Fajar Hardiansyah Muhammad Barokah Muhammad Iqbal Muhammad Wasil Mukrimin Mursalim Nasution, Anhar Nida Nuraini Nurdiana Nurfadillah Nurhanifa Nurhanifa Nurjannah Nursigit Bitoro Olly Sanny Hutabarat Prabowo, Arga Satrio Pristianto, Hendrik Purwanto, A Didik Setya Rajib Muammar Ridha Izzulhaq, Muhammad Rina Purnama Sari Rini, Retno Puspa Riyadhul Fajri Riyadhul Fajri Rokhman Saiful Bahri Salamah Salengke, Salengke Saputri, Yuni Sazili Selpiah Suhartini Sukowati, Dwi Guntoro SUNARNO Syafriadi Tasari, Sutriani Teuku Rihayat Upik Nurbaiti Widya, Mitha Wiratmadinata Yetri Hasan Zainul Amri Zufiyardi Zulkifli