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Articles by Arief
Total Records ( 12 ) for Arief
  Arief , Novirman Jamarun , Roni Pazla and Benni Satria
  Background and Objective: The utilization of by-products of palm oil industry consists of palm kernel cake (PKC), palm oil sludge (POS) as feed is limited duo to their high lignin content. Probiotics are able to create a balance of microbes in the digestive tract thus creating optimum conditions for digestion of fibrous feed and improving feed conversion efficiency, which in turn can increase the production of livestock. The objective of this research was to determine the level of replacement concentrate ration of Etawa Crossbred dairy goat (ECDG) with concentrates formulated by various of by product of palm oil industry (palm kernel cake (PKC) and palm oil sludge (POS)) that have supplemented with probiotics. Materials and Methods: Research was conducted using completely randomized design (CRD) with 5 treatments concentrate ration replacement and 4 replications (Treatment A: about 100% concentrate standard (CS) and 0% concentrate of by products of palm oil industry (CBPO), B: 75% CS+25% CBPO, C: 50% CS+50% CBPO, D: 25% CS+75% CBPO and Treatment E). 0% CS+100% CBPO. Parameters measured were quality of milk, ie protein, fat, solid non fat (SNF), density and mineral (Ca and P). Results: The results showed that protein, fat, SNF, density and mineral (Ca and P) was not significant (p>0.05). Conclusion: From the overall parameters it can be concluded that the use of a byproduct of palm oil industry until 100% for ECDG ration does not affect the quality of milk in terms of protein, fat, minerals and density of milk.
  Kusiyah and Arief
  The main objective of the company is increasing the value of the company through increased political prosperity shareholders. Shareholders, creditors and managers are parties who have different interests and perspectives with regard to the company. In general, every company has two goals: short-term goals and long term goals. Short-term goal of the company is to make profits while the company’s long-term goal is to increase the value of the company. The value of the company is an important thing for a manager and for an investor. To meet the expectations of investors, financial managers trying to maximize the welfare of investors by making various decisions and policies for the financial investment decisions, financing decisions and dividend policy. Third financial decision was necessary because the decision was mutually affect one another and can affect the value of the company. The purpose of this research to study the impact of investment decisions, financing decisions and dividend policy on firm value. The data used are secondary data from go-public banking financial services company and analyzed using multiple regression. The results of this study are investment decisions and dividend policy affects the value of the company while the funding decision does not affect the value of the company. And simultaneous, investment decisions, financing decisions and dividend policy affects the value of the company. On the other side, the results indicate that there is positive relationship between investment decisions, financing decisions and dividend policy on firm value.
  Arief , Novirman Jamarun and M. Winugroho
  Palm manufacture industry has produced many kinds of by products which can potentially be a feedstuffs such as Palm Kernel Cake (PKC), Palm Oil Sludge (POS) and Palm Press Fiber (PPF). From the whole result of production, only 40% of products from palm which can be used for human’s consumption, while 60% is the by product which can potentially be feedstuffs. In 2008, the area of palm plantation in Indonesia reaches 7.3 millions of Ha with the production reaches 19.2 millions of ton and on 2009, the area of palm reaches 7.9 million of Ha with the production of 19.4 millions of ton (PTPN, 2009). From those productions above, the potential of by product of palm manufacture industry which will be produced and used as feedstuffs is really big. The aim of the research was conducted rumen’s fluid characteristics of ettawa goat given ration by paoducts of palm industry. The matter used on this experiment was by products of palm industry which consists of PKC, POS and PPF which can be formulated in a complete ration with different composition in forage 60% and 40% concentrate. Substrate of complete ration which will be evaluated in in-vitro analysis, was made in the form of flour and the making of medium liquid which consist of macro mineral, micro mineral, resazurin, buffer and Reducing Agent (RA) was pointed to the method of Theodorou and Brooks (1990). The measured variable is the characteristic of rumen’s fluid including total production of gas, pH, rumen’s bacteria, NH3 and VFA throughout 48 h of incubation. The result of experiment showed that the use of by products of palm industry formulated in a complete ration produce the characteristic of rumen’s liquid which still complete the standard, concerned from pH (6.44), total gas production (97.00 ml), the amount of bacteria colony (5.02 x 109 cfu/ml), NH3 (74 mg/l) and VFA (81.68 mM). From the whole parameter above, it can be concluded that the by product of palm industry can be used as feedstuffs and have a big potential to replace substance of conventional ration which is normally used.
  Ferawati , Endang Purwati , Arief and Khalil
  Gamma irradiation can be used as one of the most efficient methods to reduce microorganisms in food. The irradiation of food is used for a number of purposes, including microbiological control, insect control and inhibitions of sprouting and delay of senescence of living food. The aim of the present study was to analyze the effect of gamma irradiation technology on their microbial quality (total plate count, coliform and fungal count) and sensory attributes of fresh meat. Twenty fresh meat samples were collected from Pondok labu traditional market in South Jakarta. The fresh meat samples were treated with 0, 1, 2, 3 kGy gamma irradiation dose. Exposure to gamma irradiation in Co60 driven irradiating facility was performed at the Center for the Application of Isotopes and Radiation Technology, National Nuclear Energy Agency of Indonesia (BATAN) in Jakarta. Irradiation had highly significant effects (p<0.01) on reduction of microbial population. Microbial analysis indicated that gamma irradiation was effective in reducing those microorganisms and the optimal dose was achieved at 3 kGy. The results have shown not only the need for sanitary conditions improvements in slaughter and processing of fresh meat but also the irradiation effectiveness to eliminate total bacteria, coliform and fungi count. This study showed that irradiation had no significant effects (p>0.05) on the sensory attributes of fresh meat.
  Arief , N. Jamarun and B. Satria
  The in-vitro characteristics of the rumen fluid of ettawa crossbred dairy goats was analyzed to determine the digestibility of range of feeds based on palm oil industry by-products. The research used completely randomized design (CRD) with 5 different ratios of Palm Kernel Cake (PKC) and Palm Oil Sludge (POS) as follows: A; (10% PKC+50% POS), B; (20% PKC+40% POS); C (30% PKC+30% POS; D (40% PKC+20% POS), E; (50% PKC+10% POS). The characteristics of rumen fluid that were measured were pH, Volatile Fatty Acid (VFA) and NH3-N and digestibility of Dry Materials (DDM) and Organic Materials (DOM) in-vitro. The in-vitro study was performed according to the method of Tilley and Terry (1983). The results showed that the measured characteristics of the rumen fluid were within normal limits with pH 6.87-6.94, VFA 102.40-133.62 mM and NH3-N 9:00-9.91 mM. The digestibility of Dry Matter (DDM) ranged from 40.13 to 45.52% and the digestibility of Organic Materials (DOM) ranged from 38.94 to 44.56%. Most of the parameters depended significantly on the ratio of PKC and POS.
  Novirman Jamarun , Mardiati Zain , Arief and Roni Pazla
  Objective: The objective of this study was to evaluate the effects of calcium (Ca), phosphorus (P) and manganese (Mn) supplementation during Oil Palm Frond (OPF) fermentation by Phanerochaete chrysosporium on laccase activity and in vitro fiber digestibility. Materials and Methods: This study was carried out using a randomized block design with 3 treatments (Addition of Ca, P and Mn) and 5 replications. The following treatments were performed: T1 = Ca 2000+P 1000+Mn 150 ppm, T2 = Ca 2000+P 1500+Mn 150 ppm, T3 = Ca 2000+P 2000+Mn 150 ppm. The data were subjected to an analysis of variance (ANOVA) and differences between treatment means were tested using Duncan’s Multiple Range Test (DMRT). The parameters measured were as follows: Laccase activity (U mL –1), Neutral Detergent Fiber (NDF) digestibility (%), Acid Detergent Fiber (ADF) digestibility (%), cellulose digestibility (%) and hemicellulose digestibility (%). Results: Results revealed that laccase enzyme activity, NDF digestibility, ADF digestibility and cellulose digestibility were significantly increased by the addition of P in T3. However, T2 and T3 non-significantly affected (p>0.05) the digestibility of hemicelluloses. Conclusion: It is concluded that supplementation of OPFs with Ca 2000, P 2000 and Mn 150 ppm resulted in the highest laccase activity and in vitro fiber digestibility.
  Novirman Jamarun , Mardiati Zain , Arief and Roni Pazla
  Objective: The aim of this study was to evaluate the effects of calcium (Ca), phosphorus (P) and manganese (Mn) supplementation during Oil Palm Frond (OPF) fermentation by Phanerochaete chrysosporium on rumen fluid characteristics and Microbial Protein Synthesis (MPS). Materials and Methods: This study was conducted using a randomized block design with 3 treatments (the addition of Ca, P and Mn) and 5 replications. The following treatments were performed: T1 = 2000 ppm Ca+1000 ppm P+150 ppm Mn, T2 = 2000 ppm Ca+1500 ppm P+150 ppm Mn and T3 = 2000 ppm Ca+2000 ppm P+150 ppm Mn. The data were analyzed using one-way analysis of variance (ANOVA) followed by Duncan’s multiple range test for comparisons among the treatment means. The parameters measured were as follows: pH, Volatile Fatty Acids (VFAs) (mM), NH3 (mM), total protozoa (cells mL–1) (log 10), total bacteria (cells mL–1) (log 10) and MPS (mg mL–1). Results: The results revealed that VFA levels were significantly increased by the addition of P in T3. However, T1, T2 and T3 non-significantly affected (p>0.05) pH, NH3, total protozoa, total bacterial and MPS. Conclusion: The supplementation of OPFs with 2000 ppm Ca, 2000 ppm P and 150 ppm Mn resulted in the best rumen fluid characteristics and MPS.
  Novirman Jamarun , Mardiati Zain , Arief and Roni Pazla
  Objective: The aim of this research was to identify the rumen microbial populations and determine the in vitro nutrient digestibility of fermented oil palm fronds (FOPF) by Phanerochaete chrysosporium, which were supplemented with Ca, P and Mn minerals and combined with tithonia (Tithonia diversifolia) and elephant grass (Pennisetum purpureum). Methodology: This study used a randomized block design consisting of 4 treatment groups: T1 = 20% FOPF+80% (tithonia+elephant grass), T2 = 40% FOPF+60% (tithonia+elephant grass), T3 = 60% FOPF+40% (tithonia+elephant grass) and T4 = 80% FOPF+20% (tithonia+elephant grass). Four replicates were used per treatment. The ratio of tithonia to elephant grass was 1:4. Data were analyzed by analysis of variance (ANOVA) and differences among means were tested using Duncan’s multiple range tests (DMRT) with 5 and 1% confidence intervals. The measured variables were total bacteria, total protozoa, dry matter digestibility (DMD), organic matter digestibility (OMD) and crude fiber digestibility (CFD). Results: The results showed that total population of bacteria, DMD, OMD and CFD were the highest (p<0.01) in the T1 treatment. Total protozoa were lowest in T1 but the difference with the other treatments was not significant (p>0.05). Conclusion: T1 (combination of 20% FOPF and 80% tithonia+elephant grass) had the best effect on rumen microbial populations and in vitro digestibility.
  Arief , Elihasridas , Simel Somen , Elly Roza , Roni Pazla and Rizqan
  Objective: The aim of this research was to determine the influence of palm oil industry by-products (palm kernel cake and palm oil sludge) and Paitan (Tithonia diversifolia, TD) as roughage on the production and quality of Etawa crossbreed (EC) goat milk. Materials and Methods: Eighteen EC dairy goats on their second lactation month were used in this study. This study utilized a Completely Randomized Design (CRD) that consisted of 6 treatments and 3 replicates. The treatments were as follows: (A) 50% roughage+50% soybean meal waste (SMW)+0% palm oil concentrate (POC), (B) 50% TD+50% SMW+0% POC, (C) 50% TD+37.5% SMW+12.5% POC, (D) 50% TD+25% SMW+25% POC, (E) 50% TD+12.5% SMW+37.5% POC and (F) 50% TD+0% SMW+50% POC. The variables observed in this study were the production and quality of Etawa crossbreed milk (protein and lactose). Results: Results showed a milk production rate (1.44-1.85 kg/head/day) with a milk protein concentration (3.48-3.76%) and a lactose concentration (4.01- 4.16%). Using palm oil industry by-products and TD as an early feed can significantly increase milk production (p<0.01), but there was no effect on milk quality (p<0.05). Conclusion: The TD and palm oil industry by-products can be used as an alternative feed for animals. The optimal feed for dairy goats was 50% TD+25% SMW+25% POS (treatment D).
  Indri Juliyarsi , Puji Hartini , Yuherman , Akmal Djamaan , Arief , Hendri Purwanto , Salam N. Aritonang , James Hellyward and Endang Purwati
  Background and Objective: Tempoyak is a traditional fermented condiment made from durian (Durio zibethinus) pulp. This condiment is made by mixing the durian pulp with salt and fermenting under partially anaerobic conditions at ambient temperature in a closed container. This study aimed to determine the characteristics of Lactic Acid Bacteria (LAB) in tempoyak from Padang Pariaman District, West Sumatra. Methodology: Experimental methods of measuring the chemical composition of tempoyak; isolation and purification of LAB; characterization of selected isolates; isolation of genomic 16S rRNA; microscopic, macroscopic, molecular identification and determination of antimicrobial action by the agar well diffusion method using E. coli, S. aureus and L. monocytogenes as indicator bacteria. Results: Tempoyak is composed of water, protein, fat and has an acidic taste due to its low pH (3.89) affects the water content (70.21%), protein content (5.04%) and fat content (6.11%). Gram staining showed that the isolated bacteria (bacil) are Gram-positive and catalase-negative. Moreover, antimicrobial activity was tested by the agar well diffusion method using E. coli, S. aureus and L. monocytogenes as indicator bacteria. The largest inhibitory zone was observed between the isolated Tempoyak Original (TO) sample and S. aureus (19.3 mm), followed by TO against L. monocytogenes (17.3 mm) and the smallest inhibitory zone was observed between the TO sample and E. coli (12.3 mm). Conclusion: The length of the PCR amplified DNA fragment was 1482 bp. The sequencing results from the isolated tempoyak TO showed that the LAB isolate was Lactobacillus fermentum strain CAU6337.
  Roni Pazla , Novirman Jamarun , Mardiati Zain and Arief
  Objective: The aim of this research was to measure microbial protein synthesis (MPS) in Phanerochaete chrysosporium and determine its in vitro nutrient digestibility and fermentability of fermented oil palm fronds (FOPF) under supplementation with Ca, P and Mn minerals and grown with tithonia (T) and elephant grass (EG). Methodology: This study used a randomized block design consisting of four treatment groups: T1 = 20% FOPF+16% T+64% EG, T2 = 40% FOPF+12% T+48% EG, T3 = 60% FOPF+8%, T+32% EG and T4 = 80% FOPF+4% T+16% EG. Four replicates were used per treatment. The data were analyzed using one-way analysis of variance (ANOVA) and differences among the means were tested using Duncan’s multiple range tests (DMRT) with 5 and 1% confidence intervals. The variables measured were crude protein (CP) digestibility (CPD), cellulose digestibility (CD), ammonia (NH3) concentration, total volatile fatty acid (VFA) content and fluid ruminal pH values as indicators of fermentability and MPS. Results: The results showed that CPD, CD, NH3 concentration, VFA content and MPS were the highest (p<0.01) in the T1 treatment. However, pH was lowest (p<0.01) in T1. Conclusion: The combination of 20% FOPF+16% T+64% EG had the best effect on MPS, in vitro nutrient digestibility and fermentability.
  Arief , Simel Sowmen , Rusdimansyah and Roni Pazla
  Background and Objective: The exploration of new and quality animal feed sources is very important for identifying supplements to the limited supply of grass. Palm oil processing industry byproducts, tithonia plants and corn waste have very good nutrient content for animal feed. The research objective was to study the potential of palm oil processing industry byproducts, tithonia (Tithonia diversifolia) and corn waste by in vitro digestion as feed ingredients for Etawa crossbred dairy goats (ECDGs). The long-term goal of this study was to obtain a concentrate ration formula by utilizing industrial byproducts of the palm oil industry, local forage of tithonia and corn waste, for ECDG with the ultimate goal of increasing the productivity of ECDGs to meet milk self-sufficiency by 2020. The theme of this study is in line with Andalas University’s Master Plan Research with a focus on Food Security. Materials and Methods: This study used a randomized complete design consisting of three treatment groups; (A) Concentrate Ration (CR)+Tithonia, (B) CR+Tithonia+corn waste and © CR+corn waste. Five replicates were used per treatment. The CR consisted of 30% palm kernel cake (PKC), 20% rice bran, 9% corn, 40% tofu waste and 1% mineral. The protein and crude fiber content of the CR was 13.78 and 13.32%, respectively. The data were analyzed using one-way analysis of variance (ANOVA) and differences between treatments were tested using the Duncan multiple range test (DMRT) with 5% confidence intervals. The variables measured were dry matter digestibility (DMD), organic matter digestibility (OMD), crude protein digestibility (CPD) and digestibility of fiber fractions (NDF, ADF and cellulose). Results: The results showed that DMD, OMD and digestibility of fiber fractions (NDF, ADF and cellulose) were greatest (p<0.05) in treatment B. However, treatments A, B and C did not affect the CPD and the results were significant. Conclusion: It was concluded that the combination of concentrate ration with tithonia and corn waste resulted in the highest in vitro digestibility.
 
 
 
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