Rona J. Nainggolan
Program Studi Ilmu dan Teknologi Pangan, Fakultas Pertanian USU Jl. Prof. Dr. A. Sofyan No. 3 Kampus USU Medan 20155

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PENGARUH UMUR POHON KELAPA SAWIT DAN TAHAPAN PENGELUARAN NIRA TERHADAP MUTU NIRA KELAPA SAWIT (Elais guineensis Jacq) (The Effect of Palm Tree Age and Excreation Stages of Palm Sap Quality (Elais guineensis Jacq)) Memori SRY Citra R Gulo; Terip Karo-Karo; Rona J. Nainggolan
Jurnal Rekayasa Pangan dan Pertanian Vol 6, No 2 (2018): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

ABSTRACT   Sap is a sweet liquid produced from squezee of the stems produced by bunches of plant flowers such as coconut, nipah,  and other types of Palma family. The older the palm tree, the tree will be higher and will affect the resulting sap (nira). Quality of sap is important so it is necessary to pay attention to the factors that can affect such as tree age, weather, wiretapping, stages of excreation of nira and soil condition of palm trees. This study was aimed to determine the effect of age of oil palm trees (10, 15 and 20 years), excreation stage of nira (0, 10, 15, 20 and 25 days) as well as their interaction on the production and quality of sap produced. Parameter of observed were water content, ash content, total soluble solid, pH, total acid, alcohol, length of tree, diameter of tree and amount of nira. The results showed that tree age and excreation stage of sap had affected on the production and quality of sap produced. This was based on the total amount of total soluble solid which was increasing and reache the best limit on the treatment of 15 year old palm tree and excreation stage of nira on the 20th day i.e 16,9 oBrix. Keywords : Palm Oil Palm (Elais guineensis Jacq), Tree Age, Excreation Stage Sap, Quality Sap ABSTRAK Nira merupakan cairan manis yang dihasilkan dari perasan batang dihasilkan oleh tandan bunga tanaman seperti kelapa, nipah, aren, dan jenis keluarga Palma lainnya. Semakin tua pohon kelapa sawit, maka pohon akan semakin tinggi dan akan berpengaruh terhadap nira yang dihasilkan. Mutu nira merupakan hal yang penting sehingga perlu diperhatian faktor-fakror yang dapat mempengaruhi seperti umur pohon, cuaca, cara penyadapan, tahapan pengeluaran nira dan kesehatan tanah dari pohon kelapa sawit. Penelitian ini bertujuan untuk mengetahui pengaruh umur pohon kelapa sawit (10, 15 dan 20 tahun), tahap pengeluaran nira (0, 10, 15, 20 dan 25 hari) serta interaksinya terhadap produksi dan mutu nira yang dihasilkan. Parameter yang diamati adalah kadar air, kadar abu, total padatan terlarut, pH,  total asam, alkohol, panjang pohon, diameter, dan jumlah nira. Hasil penelitian menunjukkan bahwa umur pohon dan tahap pengeluaran nira memiliki pengaruh terhadap produksi dan mutu nira yang dihasilkan. Hal ini dilihat berdasarkan jumlah total padatan terlarut nira yang semakin meningkat dan mencapai batas terbaik pada perlakuan umur pohon kelapa sawit 15 tahun dan tahapan pengeluaran nira pada hari ke 20 yaitu sebesar 16,9 oBrix.   Kata kunci: Nira kelapa sawit (Elais guineensis Jacq), Umur Pohon, Tahapan Pengeluaran Nira, Mutu Nira.
PENGARUH PERBANDINGAN SARI NANAS DENGAN SARI DAUN KEMANGI DAN KONSENTRASI MALTODEKSTRIN TERHADAP MUTU MARSHMALLOW (The Effect of Ratio Juice Pineapple and Basil Juice and Maltodextrin Concentration on quality of Marshmallow) Endah Mulyati Ratna Ningsih; Ismed Suhaidi; Rona J. Nainggolan
Jurnal Rekayasa Pangan dan Pertanian Vol 6, No 4 (2018): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

ABSTRACTThe purpose of this study was determine the effect of ratio of pineapple juice and basil juice and maltodextrin concentration of the quality of marshmallow. Method of this study was completely randomised design with two factors, i.e ratio of pineapple juice and basil juice (S) : (50%:50%, 60%:40%, 70%:30%, 80%:20%) and maltodextrin concentration (M) : (5%, 6%, 7%, 8%). The analyzed parameters was moisture content, ash content, vitamin C content, total acid, sugar content, sensory test (color, flavor, taste, and texture), and score test (color, flavor, and texture). The of ratio pineapple juice and basil juice had highly significant effect on moisture content, ash content, vitamin C content, total acid, sugar content, the value of organoleptic flavor, the value of flavor score, the value of organoleptic texture. The maltodextrin concentration had highly significant effect on moisture content and the value of texture score, and had a significant effect on the value of organoleptic texture. The interaction of two factors had significant effect on moisture content. The ratio of pineapple juice and basil juice of 80%:20% (S4) and concentration of maltodextrin 8% (M4) produced the best marshmallow. The best products were analyzed for antioxidant activity with an IC50 value of 99,547 μg/ml.Keyword : Basil, Juice,  Maltodextrin, Marshmallow, Pineapple ABSTRAKPenelitian ini dilakukan untuk mengetahui pengaruh perbandingan sari nanas dengan sari daun kemangi dan konsentrasi maltodekstrin terhadap mutu marshmallow. Penelitian ini menggunakan rancangan acak lengkap dengan dua faktor, yakni perbandingan sari nanas dengan sari daun kemangi (S) : (50%:50%, 60%:40%, 70%:30%, 80%:20%) dan konsentrasi maltodkestrin (M) : (5%, 6%, 7%, 8%). Parameter yang dianalisa adalah kadar air, kadar abu, kadar vitamin C, total asam, total gula, uji organoleptik (warna, aroma, rasa, dan tekstur), dan uji skor (warna, aroma, dan tekstur). Perbandingan sari nanas dengan sari daun kemangi memberi pengaruh berbeda sangat nyata terhadap kadar air, kadar abu, kadar vitamin C, total asam, total gula, nilai hedonik aroma, nilai skor aroma, nilai hedonik tekstur, dan nilai skor tekstur. Konsentrasi maltodekstrin memberi pengaruh berbeda sangat nyata terhadap kadar air dan nilai skor tekstur, dan berbeda nyata terhadap nilai hedonik tekstur. Interaksi kedua faktor memberikan pengaruh berbeda sangat nyata terhadap kadar air. Perbandingan sari nanas dan sari daun kemangi 80%:20% (S4) dan konsentrasi maltodekstrin 8% (M4) menghasilkan marshmallow dengan mutu terbaik. Produk terbaik dilakukan analisis aktivitas antioksidan dengan nilai IC50 sebesar 99,547 μg/ml.Kata kunci : Daun kemangi, Juice, Maltodekstrin, Marshmallow, Nanas.