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Rona J. Nainggolan
Program Studi Ilmu dan Teknologi Pangan Fakultas Pertanian Universitas Sumatera Utara
Agriculture, Biological Sciences & Forestry Engineering

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The Effect of Ratio of Lemongrass Bar Juice with Ginger Juice and Concentration of Palm Sugar Powder on the Quality of Lemongrass Fresh Drink Powder Devi Marista Togatorop; Rona J. Nainggolan; Linda Masniary Limbong
Jurnal Rekayasa Pangan dan Pertanian Vol 3, No 2 (2015): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

This research was conducted to determine the effect of ratio of lemongrass bar juice with ginger juice and concentration of palm sugar powder on the quality of lemongrass fresh drink powder . This research was conducted using completely randomized design (CRD) with two factors i. e: ratio of lemongrass bar juice with ginger juice (S) : (95% : 5 ; 90% : 10% ; 85% : 20% ; 80% : 20%) and concentration of palm sugar powder (G) : (12%, 14%, 16%, 18%). The parameters analyzed were water content, ash content, total acid, total soluble solid, solubility, solubility speed, the score value of color and taste, and the hedonic value of flavor and taste. The results showed the ratio of lemongrass bar juice with ginger juice had highly significant effect on water content and hedonic value flavor. Concentration of palm sugar powder had highly significant effect on water content, ash content, total acid, total soluble solid, solubility, solubility speed, the hedonic value of taste, and the score value of color. The interaction between the two factors had significant effect on water content and ash content. Ratio of lemongrass bar juice with ginger juice of 80% : 20% and concentration of palm sugar powder of 18% produced the best quality of lemongrass fresh drink powder . Keywords : Fresh drink powder, ginger juice, lemongrass bar juice, palm sugar powder.
Effect of Concentration of Soursop Pulp with Ginger and Arabic Gum Concentration on the Quality of Fruit Leather M. Albi Putra; Rona J. Nainggolan; Mimi Nurminah
Jurnal Rekayasa Pangan dan Pertanian Vol 3, No 2 (2015): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

The aim of this research was to find the effect of ratio of soursop and ginger pulps with several arabic gum concentration on the quality of soursop and ginger fruit leather. This research was conducted by using completely randomized design with two factors, i.e. :ratio of soursop and ginger pulps (S) : (75% : 25% ; 80% : 20% ; 85% : 15% ; 90% : 10%; 95% : 5%) and arabic gum concentration (K): (0,5%, 1%, 1,5% ). Parameters analyzed were moisture content, ash content, vitamin C content, crude fiber content, total soluble solid, total acid, organoleptic score of colour, taste and texture and organoleptic hedonic values of colour, flavour, taste, and texture. The results showed that the ratio soursop and ginger pulps had highly significant effect on moisture content, ash content, vitamin C content, crude fiber content, total soluble solid, total acid, score of colour, taste and texture, and hedonic values of taste and texture. Arabic gum concentration had highly significant effect on moisture content, ash content, vitamin C content, crude fiber content, total soluble solid, total acid. Interactions of the two factors had highly significant effect on moisture content and crude fiber content, and had no effect on ash content, vitamin C content, total solubility solid, total acid, scores of colour, taste and texture, and hedonic values of colour, flavor, taste and texture. The ratio of soursop and ginger pulps of (95% : 5%) and Arabic gum concentration of (1,5%) produced the best quality of fruit leather and more acceptable. Keywords: Arabic gum, fruit leather, ginger, soursop.
The Effect of Ratio of Lemongrass Stalk Juice with Galingale Juice and Concentration of Palm Sugar Powder on the Quality of Lemongrass Fresh Drink Powder Tio Maria Situmorang; Rona J. Nainggolan; Herla Rusmarilin
Jurnal Rekayasa Pangan dan Pertanian Vol 3, No 2 (2015): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

This research was conducted to determine the effect of ratio of lemongrass stalk juice with galingale juice and concentration of palm sugar powder on the quality of lemongrass fresh drink powder . This research was conducted using completely randomized design (CRD) with, two factors i.e : ratio of lemongrass stalk juice with galingale juice (S) : (95% : 5, 90% : 10% , 85% : 15%, 80% : 20%) and concentration of palm sugar powder (G) : (12%, 14%, 16%, 18%). The parameters analyzed were moisture content, ash content, total acid, total soluble solid, solubility, the score value of color and taste, and the hedonic value of flavor and taste. The results showed that of lemongrass stalk juice with galingale juice had highly significant effect on moisture content, and flavor. Concentration of palm sugar powder had highly significant effect on moisture content, ash content, total acid, total soluble solid, solubility, score of color and taste, the hedonic value of taste. The interaction between the two factors had significant effect on taste. Ratio of lemongrass stalk juice with galingale juice of 90% : 10% and concentration of palm sugar powder of 18% produced the best quality of lemongrass fresh drink powder . Keywords : Galingale, lemongrass, lemongrass stalk juice, palm sugar, powder.
The Effect Ratio of Pineapple with Melon and Sugar Concentration on The Quality of Ginger Hard Candy Connie Daniella; Linda Masniary Lubis; Rona J. Nainggolan
Jurnal Rekayasa Pangan dan Pertanian Vol 3, No 3 (2015): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

The purpose of this study was to determine the effect of ratio of pineapple and melon and sugar concentration on the quality of hard candy. This study was done by using completely randomized design with two factors, ie : ratio of pineapple and melon (N) (40% : 40%, 45% : 35%, 50% : 30%, 55% : 25%) and sugar concentration (G) (50%, 55%, 60%, 65%). The analyzed parameters were moisture content, vitamin C content, total acid, total soluble solid, ash content, sensory test (color, flavor, taste, and texture). The ratio of pineapple and melon gave significant effect on moisture content, vitamin C content, total acid, total soluble solid, ash content, and sensory test (color, flavor, taste, and texture). The sugar concentration gave significant effect on moisture content, vitamin C content, total acid, total soluble solid, ash content, and sensory test (color, flavor, taste, and texture). The interaction of the ratio of pineapple with melon and sugar concentration had no significant effect on moisture content, ascorbic acid content, total acid, total soluble solid, sensory test (color, taste, and texture), but gave highly  significant effect on ash content, and gave high significant effect on sensory test (flavor). The best composition which gave the best effect on hard candy was 50% : 25% of pineapple ratio with melon and 65%  sugar. Keywords : Ginger, hard candy, ratio of pineapple with melon, sugar concentration
Effect of Micture of Tomato Porridge with Sweet Potato Juice and Potassium Sorbat Concentration on the Quality of Papaya Sauce Sri Novita Sari; Ismed Suhaidi; Rona J. Nainggolan
Jurnal Rekayasa Pangan dan Pertanian Vol 3, No 3 (2015): Jurnal Rekayasa Pangan dan Pertanian
Publisher : Universitas Sumatera Utara

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Abstract

The aim of this research was to investigate the effect of mixture of tomato porridge with sweet potato juice and potassium sorbat concentration on the quality of papaya sauce. The research had been performed using factorial completely rendomized design (CRD) with two factors, i.e; mixture of tomato porridge with sweet potato juice (A)=(40:10%), (30:15%), (30:20%), (25:25%) with 50% papaya porridge respectively and potassium sorbat concentration (S)=(0%), (0,1%), (0,2%), (0,3%). Parameters analyzed were moisture content, ash content, total acid, vitamin C content, total soluble solid, viscosity and organoleptik of color, smell, taste. The results showed that mixture of tomato porridge with sweet potato juice had highly significant effect on moisture content, ash content, total acid, vitamin C content, total soluble solid, viscosity and organoleptic value (color, smell, taste). The potassium sorbat concentration had highly significant effect on moisture content, ash content, total acid, vitamin C content, viscosity, and organoleptic values. The intraction of mixture of tomato porridge with sweet potato juice and potassium sorbat concentration had significant effect on total acid and had nosignificant effect on moisture content, ash content, vitamin C content, total soluble solid, viscocity and organileptic values. The (A3)=(30:20%) tomato porridge with sweet potato juice (S2)=(0,1%) potassium sorbat concentration produced better and more acceptable quality of the sauce. Keyword : papaya, potassium sorbat, sauce, sweet potato, tomato
Co-Authors Connie Daniella Devi Marista Togatorop Herla Rusmarilin Ismed Suhaidi Linda Masniary Limbong Linda Masniary Lubis M. Albi Putra Mimi Nurminah Sri Novita Sari Tio Maria Situmorang