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All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Teknologi Pertanian (Agricultural Technology Journal)
Lalujan, Lana Elisabeth
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Materials Science & Nanotechnology Physics

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Pengaruh Cara Dehidrasi Terhadap Karakteristik Daun Leilem (Clerodendrum minahassae Teijsm. & Binn) Rombelayuk, Reniaty; Sumual, Maria Fransisca; Lalujan, Lana Elisabeth
Jurnal Teknologi Pertanian (Agricultural Technology Journal) Vol 15 No 1 (2024): Jurnal Teknologi Pertanian (Agricultural Technology Journal)
Publisher : Jurnal Teknologi Pertanian (Agricultural Technology Journal)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/jteta.v15i1.55813

Abstract

The purpose of this study is to obtain a dehydration method that can preserve the characteristics of fresh leilem leaves. The method used in this study was a Complete Randomized Design (CRD) with 4 treatments i.e; A1 (Sunlight ±31-500C), A2 (Chiller ±4-80C), A3 (room temperature ±26-300C), and A4 (Oven 600C). Each treatment is repeated 3 times. Further research results are processed using ANOVA, if there is significount influence, it is continued with a 5% BNT test. The results showed that influence of various dehydration methods on color, water content, chlorophyll, vitamin C, and rehydration of leilem leaf. Dehydration using sunlight has an L* value of 26.63, 4,49% moisture content, 31.961 mg /L total chlorophyll, 0.027ppm vitamin C, and the rehydration ratio of 2.21. Leilem leaves dehydrated using Chiller have an L* value of 29.70, 12,60% moisture content, 45.792 mg/L total chlorophyll, 0.050 ppm vitamin C, and the rehydration ratio of 2.32. In the leilem leaf dehydration method room temperature  has L* 28.67 strands, 5,54% moisture content, 41.281 mg/L total chlorophyll, 0.034 ppm vitamin C, and the rehydration ratio of 1.81. Leilem leaf dehydration using an oven has an L* value of 22.93, 3,05% moisture content, 42,132 mg/L total chlorophyll, 0.033 ppm vitamin C, and the rehydration ratio of 1.85. The best method dehydration of leilem leaves is under chiling temperature 4-80C in the chiller .The physicochemical properties of leilem leaves produced are green, showing the stability of chlorophyll pigment and has the highest water absorption of rehydration ratio.  
Pengaruh Pencampuran Kulit Semangka (Citrullus lanatus) dan Mangga Kweni (Mangifera odorata Griff.) terhadap Kualitas Selai Lembaran Lalujan, Lana Elisabeth; Putri, Alya Cahyani; Langi, Tineke Marlyn; Koapaha, Teltje
Jurnal Penelitian Pendidikan IPA Vol 11 No 11 (2025): November
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i11.12052

Abstract

This study aimed to evaluate the effect of mixing watermelon rind (Citrullus lanatus) and kweni mango (Mangifera odorata Griff.) on the color and sensory quality of slice jam while promoting the utilization of fruit-processing by-products. The experiment employed a Completely Randomized Design (CRD) with four treatment ratios of watermelon rind to kweni mango pulp: P1 (20:80), P2 (30:70), P3 (40:60), and P4 (50:50), each replicated three times. Color parameters (L*, a*, b*) were measured using the Color Grab application, and sensory evaluation of color, aroma, taste, and texture was conducted by 25 untrained panelists using a seven-point hedonic scale. Results showed that increasing the proportion of watermelon rind significantly enhanced lightness (L*) and yellowness (b*) while decreasing redness (a*). The sensory test indicated that the P4 formulation achieved the highest overall preference score (5.12), corresponding to a bright golden-yellow color, balanced aroma, and chewy texture. The discussion highlights that the improvement in color and texture is associated with the higher natural pectin content of watermelon rind, which contributes to gel formation and product stability. Moreover, combining kweni mango and watermelon rind demonstrates a viable approach for valorizing agricultural waste into value-added food products. In conclusion, the 50:50 mixture produced the most acceptable slice jam, confirming that watermelon rind can serve as a sustainable, functional ingredient to enhance product quality and support circular-economy practices in tropical fruit processing
Co-Authors Putri, Alya Cahyani Rombelayuk, Reniaty Sumual, Maria Fransisca Teltje Koapaha Tineke M. Langi