scholarly journals Karakteristik Komposit Bioplastik Dalam Variasi Rasio Pati Umbi Talas (Xanthosoma sagittifolium)-Kitosan

2020 ◽  
Vol 5 (2) ◽  
pp. 75
Author(s):  
Esmeralda Oktaviani Simarmata ◽  
Amna Hartiati ◽  
Bambang Admadi Harsojuwono
Keyword(s):  
Tensile Strength ◽  
Block Design ◽  
Ftir Analysis ◽  
Elongation At Break ◽  
Randomized Block Design ◽  
Xanthosoma Sagittifolium ◽  
Honestly Significant Difference ◽  
Significant Difference ◽  
Difference Test ◽  
Honestly Significant Difference Test

This research aims to know the effect of variations in the ratio of taro-chitosan tuber starch to the characteristics of bioplastic composites and determine the ratio of taro-chitosan tuber starch that produces the best bioplastic composites. This research uses a Factorial Randomized Block design with taro-chitosan tuber starch ratio variation factor in  five level (40: 60%, 35: 65%, 30: 70%, 25: 75% and 20: 80%). The treatments which grouped into 3 based on the time of making bioplastics, so there are 15 experimental units. The observed variables which tensile strength, elongation at break, modulus young, swelling development, biodegradation and FTIR test. The obtained data were analyzed for diversity and continued with the Honestly Significant Difference test. The results showed that the variation of the taro-chitosan tuber starch ratio significantly affected the tensile strength, elongation at break, modulus young, and swelling development but did not significantly affected the biodegradation of the bioplastic composites of taro-chitosan tuber starch. Variation of taro-chitosan tuber starch ratio 35: 65% produces the best bioplastic composite characteristics with tensile strength values 3.15 MPa, elongation at break 21.33%, modulus young of 14.87 MPa, swelling development test 29.69% and biodagradation ability for 13 days. FTIR analysis results show the presence of hydroxyl (O-H) alcoholic groups, (O-H) Carboxylic acid, (C = O) esters, (C - H) alkana,  (C=C) alkena , and hydrocarbons - (CH2) n.

scholarly journals ANALISA SIFAT KIMIA DAN FISIK MODIFIED CASSAVA FLOUR (MOCAF) (VARIETAS LOKAL SANGKOLA) ASAL DESA WAAI, MALUKU TENGAH

2016 ◽  
Vol 5 (1) ◽  
pp. 7
Author(s):  
Cynthia G C Lopulalan ◽  
Meitycorfrida Mailoa ◽  
Halija Pelu
Keyword(s):  
Water Immersion ◽  
Block Design ◽  
Ash Content ◽  
Cassava Flour ◽  
Randomized Block Design ◽  
Lime Water ◽  
Honestly Significant Difference ◽  
Significant Difference ◽  
Difference Test ◽  
Honestly Significant Difference Test

This study aimed to determine the method of making ‘Mocaf’ (Modified Cassava Flour) flour that was in accordance the quality standards (SNI 01-2997-1992). This study used a Randomized Block Design consisting of one factor, namely was the flouring methos consisting of four treatments: namely drying, water immersion, lime water immersion, and curing. The data were statistically tested using the analysis of variance according to the design used, followed by the Honestly Significant Difference test. Based on the research results, the best treatment of this research was lime water immersion treatment, which produced ash content of 0.74%, carbohydrate content 82.68%, HCN content 0.05% and whiteness 91.32%.

scholarly journals PENGARUH KONSENTRASI PATI UBI TALAS (Colocasia esculenta) DAN JENIS PLASTICIZER TERHADAP KARAKTERISTIK BIOPLASTIK

2019 ◽  
Vol 7 (3) ◽  
pp. 457
Author(s):  
Farida Unggul Situmorang ◽  
Amna Hartiati ◽  
Bambang Admadi Harsojuwono
Keyword(s):  
Tensile Strength ◽  
Young’S Modulus ◽  
Young's Modulus ◽  
Block Design ◽  
Colocasia Esculenta ◽  
Ftir Analysis ◽  
Elongation At Break ◽  
Randomized Block Design

This study aims to know the effect of the concetration of taro tuber starch and plasticizer type and their interactions on the characteristics of bioplastics, and to determine the concentration of taro tuber starch and plasticizer type which produces bioplastics with the best characteristics. The research used factorial randomized block design. The first factor is the concentration of taro tuber starch consisting of 3 levels 5, 6 and 7% (w/w). The second factor is the plasticizer type consisting of 3 levels that is glycerol, sorbytol and mixture plasticizer glycerol and sorbitol (1:1). Each treatment are grouped into two time-based of making bioplastics so there are 18 experimental units. Variabels observed tensile strength, elongation at break, Young’s modulus, swelling, biodegradation and FTIR. The data obtained were analyzed of variant and test Tukey’s. The result showed that the concentration of taro tuber starch and type of plasticizer had a very significant effect on tensile strength, elongation at break, Young’s Modulus and swelling but the type of plasticizer had no significant effect on biodegradation. Interaction between treatments has a very significant effect on Young’s Modulus and swelling, a significant effect on tensile strength and no significant effect on elongation at break and biodegradation. The concentration of starch 6% with plasticizer glycerol produces the best characteristics of bioplastics with tensile strength 2.270 0.057 MPa, elongation at break 14.5 0.01 %, Young’s modulus 15.683 1.155 MPa, swelling 29.88 1.02 % and biodegradability 6-7 days. FTIR analysis proved the existence of hydroxyl (O-H), carbonyl (C=O), C=C aromatic, carboxyl (C-O), C-H aromatic, and hydrocarbons –(CH2)n in the bioplastic. Keywords: Bioplastics, concentration of taro tuber starch, glycerol, sorbytol  

scholarly journals PENGARUH KADAR AIR SERASAH KAYU SUNGKAI TERHADAP KEBAKARAN HUTAN DI AREAL IUPHHK-HT PT. AYA YAYANG INDONESIA

2021 ◽  
Vol 4 (2) ◽  
pp. 234
Author(s):  
Aris Setiawan ◽  
Normela Rachmawati
Keyword(s):  
Water Content ◽  
Forest Fires ◽  
Block Design ◽  
Homogeneity Test ◽  
Normality Test ◽  
Randomized Block Design ◽  
Honestly Significant Difference ◽  
Significant Difference ◽  
Average Water ◽  
Difference Test

This study aims to determine the effect of Sungkai litter water content (Peronema canescens) on forest fires. The benefit of this research is to provide information and input on related institutions to take actions to prevent forest fires. The research object is Sungkai litter in the IUPHHK-HI area of PT. Aya Yayang Indonesia on 26-year-old plants, with 4 treatments and 5 groups. Sampling with the Stratified Random Sampling (layered random) method, data analysis using Randomized Block Design (RCBD). Based on the results of the study note that the largest average water content is in the dense canopy treatment and there is an understorey (29.67%) and a thin canopy treatment there is an understorey (27.07%) then dense canopy there is no understorey (21.80 %) and the treatment with the least water content is thin canopy treatment and no undergrowth (17.30%). The average of all samples of Sungkai litter water content (23.96%) is known to be less than 30% so according to. Ministry of Forestry and Forestry (1999), can be categorized as very vulnerable to forest fires. Based on the Diversity Analysis test, it is known that the treatment has a very significant effect, for the normality test (using Liliefors test) it is known that the data is spread normally while through the Bartlett Variety homogeneity test it is known that the data is homogeneous. Through Honestly Significant Difference test (BNJ) it is known that each treatment has a significantly different effect.Keywords: Kadar air; Serasah; Kebakaran hutan; Sungkai

scholarly journals PENGARUH LARUTAN PERENDAM SARI BELIMBING WULUH DAN GULA TERHADAP VASE LIFE BUNGA POTONG KRISAN STANDAR PUTIH (Dendranthema grandiflora L.) ‘WHITE FIJI’

2020 ◽  
Vol 9 (1) ◽  
pp. 10
Author(s):  
Anang Dwi Laksono ◽  
Nugraheni Widyawati
Keyword(s):  
Block Design ◽  
Vase Life ◽  
Cut Flowers ◽  
Dendranthema Grandiflora ◽  
Confidence Levels ◽  
Randomized Block Design ◽  
Honestly Significant Difference ◽  
Significant Difference ◽  
Two Factors ◽  
Difference Test

ABSTRACT  Chrysanthemum cut flowers  (Dendranthema grandiflora L.) after harvest have a short vase life, so that efforts are needed to extend the freshness period. The basic principle of extending the freshness of cut flowers is through soaking in water containing sugar, controlling acidity, and microbes in the soaking solution. This research aims to determine the effect of wuluh starfruit extract and sugar concentrations in the soaking solution on the vase life of chrysanthemums. The research was conducted using Randomized Block Design (RBD) consisting two factors, that is concentration of wuluh starfruit (Averrhoa bilimbi Linn.) with variations concentration  0% (B0), 1% (B1), 2% (B2), 3% (B3) and white crystalline sugar with variations concentration 0% (S0), 1% (S1), 2% (S2), 4% (S3), so there are 16 treatment combinations. Each treatment was three repetitions. Data were analyzed using Analysis of Variants (ANOVA) followed by an Honestly Significant Difference Test (BNJ) with a 95% confidence levels. The results showed that treatment giving of wuluh starfruit extract 2% + 1% of sugar (B2S1) was able to maintain chrysanthemum cut flowers during storage with maintaining flower vase life up to 17.80 days. Keywords: Chrysanthemum, soaking solution, vase life

scholarly journals Pertumbuhan Planlet Nenas (Ananas comosusL. Merr.) Varietas Smooth Cayenne Hasil Kultur In Vitro pada Beberapa Konsentrasi BAP dan Umur Plantlet

2013 ◽  
Vol 1 (1) ◽  
pp. 54
Author(s):  
Ramadhani Dwi Santoso ◽  
. Sobir
Keyword(s):  
Block Design ◽  
Error Level ◽  
Honestly Significant Difference ◽  
Significant Difference ◽  
Randomized Complete Block Design ◽  
Two Factors ◽  
Number Of Leaves ◽  
Difference Test ◽  
Honestly Significant Difference Test

<p style="text-align: justify;">The aim of this research is to study the effects of synthetic cytokinin (6-benzylaminopurine/BAP) treatments on two groups of pineapple (Ananas comosusL.Merr.) plantlets differentiated by plantlet ages. The research used the Factorial Experiment on Randomized Complete Block Design with two factors, which are BAP concentrations (0 ppm, 25 ppm, 50 ppm, and 75 ppm) and plantlet division by age grouping (52 days and 69 days), with three replications. It was then followed by Tukey’s Honestly Significant Difference Test at error level of 5%. The results show that BAP treatments with the concentration used in this research significantly inhibits the growth of pineapple plantlets observed on four variables (number of leaves, leave length, plantlet height, and plantlet diameter), while age grouping treatments didn’t show any significant effects, except on the plantlet height at 8 and 14 weeks after treatment. There are also treatment-related interactions which significantly affects the number of leaves and plantlet height. It was then suggested that lower concentrations of cytokinin are required if similar research is to be conducted in the future.</p><p>Keywords : pineapple, post-acclimatization, propagation, 6-benzylaminopurine</p>

scholarly journals PENGARUH PROPORSI BERAS SEJAHTERA DAN SAWUT SINGKONG TERHADAP MUTU NASI SAWUT

Pro Food ◽  
2021 ◽  
Vol 6 (2) ◽  
pp. 697
Author(s):  
Wiwik Pratiwi ◽  
Rien Handayani ◽  
Nazaruddin Nazaruddin
Keyword(s):  
Block Design ◽  
Microbiological Quality ◽  
Total Coliform ◽  
Significance Level ◽  
Organoleptic Quality ◽  
A Value ◽  
Randomized Block Design ◽  
Honestly Significant Difference ◽  
Significant Difference ◽  
Difference Test

ABSTRACT   The purpose of this study was to determine the effect of proportion of “Rastra” (Prosperous Rice) and shredded cassava on the quality of shredded cassava rice. The method used was experimental method in laboratory and designed using Randomized Block Design (RBD) with a single factor i.e. proportion of prosperous rice and shredded cassava. The treatments of rice and shredded cassava proportions were consisted of 100%: 0%; 80%: 20%; 60%: 40%; 40%: 60% and 20%: 80%. Chemical and organoleptic data were analyzed using analysis of variance (ANOVA) at 5% significance level using Co-stat software. The significant difference data were tested by a real difference test with honestly significant difference test, while the microbiological data were analyzed with a descriptive method. The results showed that the proportion of prosperous rice and shredded cassava had a significantly different effect on chemical quality (moisture content and ash content) and organoleptic quality (color, taste and texture) but did not significantly affect on organoleptic quality (aroma) and total microbes. 60% of prosperous rice and 40% of shredded cassava was recommended as the best proportion to produce shredded cassava rice with characteristic yellowish white, odorless smell, fluffy texture and taste of rice and has a water content of 66.02%, a value of 0.13% ash and microbiological quality that has met the SNI standard 7388: 2009 with a total microbe of 3.3x105 CFU / g, total mushroom 7,2x102 CFU / g and total coliform 27 MPN / g.   Keywords: Prosperous Rice, Quality, Proportion, Shredded Cassava   ABSTRAK             Tujuan penelitian ini adalah untuk mengetahui pengaruh proporsi beras sejahtera dan sawut singkong terhadap komponen mutu nasi sawut. Metode yang digunakan dalam penelitian ini adalah metode eksperimental yang dilaksanakan di Laboratorium dan dirancang menggunakan Rancangan Acak Kelompok (RAK) dengan satu faktor yaitu proporsi beras sejahtera dan sawut (100%:0%; 80%:20%; 60%:40%; 40%:60% dan 20%:80%).  Data hasil pengamatan kimia dan organoleptik dianalisis dengan analisis keragaman (ANOVA) pada taraf nyata 5% dengan menggunakan software Co-Stat dan diuji lanjut dengan BNJ, sedangkan data hasil pengamatan mikrobiologi dianalisis menggunakan metode deskriptif. Hasil penelitian menunjukkan bahwa proporsi beras sejahtera dan sawut singkong memberikan pengaruh yang berbeda nyata terhadap mutu kimia (kadar air dan kadar abu nasi) dan mutu organoleptik (warna, rasa dan tekstur) namun tidak berpengaruh nyata pada mutu organoleptik (aroma) dan mutu mikrobiologi (total mikroba). Perlakuan proporsi beras sejahtera dan sawut singkong (60%:40%) merupakan perlakuan terbaik karena menghasilkan nasi sawut dengan warna putih kekuningan, aroma tidak berbau apek, tekstur pule, berasa nasi serta memiliki kadar air 66,02%, nilai kadar abu 0,13% serta mutu mikrobiologi yang telah memenuhi standar SNI 7388:2009 dengan total mikroba 3,3x105 CFU/g, total jamur 7,2x102 CFU/g dan total koliform 27 MPN/g.   Kata Kunci: Beras Sejahtera, Mutu, Proporsi, Sawut Singkong.

The Effect of Stem Segment Cuttings of Robusta Coffee (Coffea canephora) on Growth of Root and Leaf Sprout

2021 ◽  
Vol 11 (1) ◽  
pp. 28-34
Author(s):  
Bistok Hasiholan Simanjuntak ◽  
Devi Kusuma Wardani
Keyword(s):  
Leaf Growth ◽  
Block Design ◽  
Experimental Treatment ◽  
Coffea Canephora ◽  
Stem Segment ◽  
Significance Level ◽  
Robusta Coffee ◽  
Randomized Block Design ◽  
Honestly Significant Difference ◽  
Significant Difference

Robusta coffee plant propagation is recommended to be performed by vegetative methods, one of which is cuttings. Among plant organs that can be used for cuttings is the stem. The research objective was to determine which stem segment from cuttings was able to provide the best root and leaf growth. The layout study used a completely randomized block design (RBD) with an experimental treatment consisting of five stem segments, namely (1) the first stem segment from the upper shoot (A); (2) the second stem segment from the upper shoot (B); (3) the third stem segment from the upper shoot (C); (4) the fourth stem segment from the upper shoot (D); and (5) the fifth stem segment from the upper shoot (E); each treatment had five replications. Data analysis was performed statistically with analysis of variance (ANOVA) and Tukey's HSD (honestly significant difference) test with a significance level of P < 0.05. Robusta coffee cuttings stems from the second stem segment from the upper shoot were able to provide the optimal root growth (root length) and shoot growth (leaf sprout height and leaf sprout growth rate). Leaf sprout number derived from the cuttings was not affected by the stem segment.

scholarly journals PENGARUH MULTI NUTRIENT SAUCE (MNS) DENGAN DOSIS YANG BERBEDA DALAM RANSUM TERHADAP KECERNAAN PROTEIN KASAR DAN SERAT KASAR PADA DOMBA

2020 ◽  
Vol 4 (1) ◽  
pp. 14-20
Author(s):  
M Alvin Rifqi Fadilla, Erwanto, Muhtarudin, dan Agung Kusuma Wijaya
Keyword(s):  
Crude Protein ◽  
Block Design ◽  
Animal Husbandry ◽  
Protein Digestibility ◽  
Crude Fiber ◽  
Significance Level ◽  
Randomized Block Design ◽  
Significant Difference ◽  
Department Faculty ◽  
Difference Test

The purpose of this research was to determine the effect of addition of Multinutrient Sauce (MNS) in the ration on digestibility of crude protein and crude fiber in sheep.  This research was conducted in May—July 2019 at the People's Farm of Kebagusan Village, Gedong Tataan District, Pesawaran Regency.  The digestibility analysis of crude protein and crude fiber was carried out at the Laboratory of Animal Nutrition and Feed, Animal Husbandry Department, Faculty of Agriculture, University of Lampung.  This study used a randomized block design (RBD) based on sheep body weight with six groups and three treatments, namely R0 (ration without MNS); R1 (R0 + MNS 5%); and R2 (R0 + MNS 10%).  The data obtained were analyzed using ANOVA at a 5% significance level or 1% significance, and continued with further test using Least Significant Difference Test (LSD) if there is significant results.  The results showed that the addition of 10% MNS in the ration had a significant effect (P<0.05) on increasing the digestibility of crude protein and crude fiber in sheep.   Keywords: multi nutrient sauce (MNS), digestibility of crude protein, digestibility of crude fiber, sheep.

scholarly journals UJI PENGGUNAAN BERBAGAI MEDIA TUMBUH DAN PEMBERIAN PUPUK GROWMORE PADA AKLIMATISASI TANAMAN ANGGREK Dendrobium

2019 ◽  
Vol 15 (2) ◽  
pp. 105-114
Author(s):  
GUSTI MARLINA ◽  
MARLINDA MARLINDA ◽  
HENI ROSNETI
Keyword(s):  
Plant Height ◽  
Growth Media ◽  
Growing Media ◽  
Randomized Design ◽  
Honestly Significant Difference ◽  
Significant Difference ◽  
Number Of Leaves ◽  
Completely Randomized Design ◽  
Difference Test ◽  
Honestly Significant Difference Test

The research objective was determine the effect of various growth media and growmore fertilizer on the acclimatization of Dendrobium orchids. study used a Completely Randomized Design (CRD) Factorial consisting of 2 factors, the first is (M) of growing media which consists of 3 levels, namely: M1 (medium fern root), M2 (wood charcoal medium), M3 (coir media coconut) and the second is (G) growmore fertilizer which consists of 4 levels, namely: G0 (without Growmore fertilizer), G1 (Growmore fertilizer 2 g / liter), G2 (fertilizer Growmore 4 g / liter), G3 (Growmore fertilizer 6 g / liter). Determine the growth of orchid plants, observations were made with the following parameters Growth Percentage (%), Plant Height (cm), Number of leaves (strands), and Number of tillers (stems). Data obtained were analyzed statistically, then continued with the Honestly Significant Difference Test (BNJ) at the level of 5%. The results showed that the single treatment of the use of growing media did not have a significant effect on the parameters of observation of growth percentage (%), plant height (cm), number of leaves (strands), and number of tillers (stems). The growth of growmore fertilizer also did not show a significant effect on the parameters of observation of growth percentage (%), plant height (cm), number of leaves (strands), and number of tillers (stems). Interaction of the use of various growth media and growmore fertilizer did not show a significant effect on the percentage of growth (%), plant height (cm), number of leaves (strands), and number of tillers (stems).

scholarly journals Pengaruh Campuran dan Rasio Bahan Pembentuk Komposit terhadap Karakteristik Komposit Bioplastik

2021 ◽  
Vol 9 (2) ◽  
pp. 157
Author(s):  
Syah Banu Putra Sitepu ◽  
Bambang Admadi Harsojuwono ◽  
Amna Hartiati
Keyword(s):  
Tensile Strength ◽  
Composite Material ◽  
Composite Materials ◽  
Design Method ◽  
Block Design ◽  
Elongation At Break ◽  
Factor I ◽  
Method Factor ◽  
Randomized Block Design ◽  
Multiple Comparison Test

This research aims to determine the effect of the mixture and the ratio of the composites and their interactions to the characteristics of the bioplastic composites and to determine the mix and ratio of the composites that produce the best characteristics of the bioplastic composites. The experimental design of this study used a randomized block design method. Factor I is a mixture of composite materials consisting of maizena-glucomannan, maizena-chitosan, and maizena-carrageenan. The second factor is the ratio of the composite material mixture which consists of 5 levels, namely 100: 0, 75:25, 50:50, 25:75 and 0: 100. The experiment resulted in 15 treatment combinations and were grouped into 2 groups when the process of making bioplastic composites was obtained, so that 30 experimental units were obtained. Data were analyzed for their diversity and continued with Duncan's multiple comparison test. The observed variables which tensile strength, elongation at break, modulus young, swelling, and biodegradation time. The results showed that the mixture and the ratio of the composites forming a very significant effect on tensile strength, elongation at break, elasticity, and swelling. The interaction has a very significant effect on tensile strength, elasticity and swelling and significantly affects the elongation at break of bioplastic composites. Meanwhile, the mixture and the ratio of the ingredients to form the composites had no significant effect on the biodegradation time. Maizena:glucomannan composite with ratio (25:75) produced the best characteristics of bioplastic composites with tensile strength values of 6.99 MPa, elongation at break of 16.5%, elasticity 42.39 MPa, swelling 78.78% and biodegradable time of 7 days. There are 2 variables that have met the standard, namely: elongation at break of bioplastic composites that meet the plastic Standard SNI 7188.7: 2016 and biodegradation time has met the international plastic standard ASTM 5336 and 3 variables that do not meet the standards, namely: Tensile strength (6,99 MPa) and elasticity (42,39 MPa) do not meet the Plastic Standard SNI 7188.7: 2016 and swelling (39,1%) does not meet international plastic standards (EN 317). Keywords : bioplastic composites, maizena, glucomannan, chitosan, carrageenan

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