scholarly journals STUDI PEMANFAATAN KULIT KOPI ARABIKA (Coffee arabica L.) SEBAGAI MIKRO ORGANISME LOKAL (MOL)

AGROINTEK ◽  
2017 ◽  
Vol 11 (1) ◽  
pp. 1
Author(s):  
A Ita Juwita ◽  
Arnida Mustafa ◽  
Risna Tamrin
Keyword(s):  
Food Source ◽  
Material Decomposition ◽  
Brown Sugar ◽  
Fermentation Time ◽  
Fermentation Method ◽  
Local Material ◽  
Coffee Arabica ◽  
Phosphorus And Potassium ◽  
Macro Nutrients

<span class="fontstyle0">MOL (Mikro Organisme Lokal) is the result of local material decomposition with<br />fermentation method. MOL contains macro and micro nutrients and microbial decomposers.<br />The smaller coffee peel that will fermented, the faster MOL can be formed. To accelerate<br />decomposition in MOL solution, it can be added food source of bacteria such as coconut water<br />and brown sugar.<br />The purpose of this study was to study the process of making MOL from coffee peel, to<br />analyze the content of nitrogen, phosphor, and potassium of MOL of coffee peel and to<br />determine the effect of fermentation time on nitrogen, phosphor, and potassium contents of<br />MOL that resulted.<br />This study was conducted with 4 (four) treatments, week 1, 2, 3 and 4 and 1 factor and<br />using 2 times replicate. The parameter of testing used for making coffee peel as local<br />microorganism are MOL volume, nitrogen, phosphor and potassium contents.<br />The result of study showed that the highest mol volume obtained in week 4 of 8.5 ml and<br />the lowest in week 1 of 5 ml. They were obtained from 500 g coffee peel. Determination of<br />nitogen, phosphorus and potassium as a macro nutrients has been conducted. The result showed<br />that the highest nitrogen was found to be 0,0039% in week 1, 3 and 4 and the lowest in week 2<br />with percentage 0.034 %. Determine of phosphorus showed that the highest phosphor was<br />obtained in week 2 wtih percentage 0.033 % and the lowest in week 4 of 0.018%, and the result<br />of potassium analyze, the highest obtained in week 2 of 0.035 % and the lowest in week 4 of<br />0.014%</span>

DETERMINATION OF RESIDUAL STRESSES AND STRESS INTENSITY FACTORS BY REMOVING LOCAL MATERIAL

2017 ◽  
Vol 48 (4) ◽  
pp. 377-398
Author(s):  
Svyatoslav Igorevich Eleonskii ◽  
Igor Nikolaevich Odintsev ◽  
Vladimir Sergeevich Pisarev ◽  
Stanislav Mikhailovich Usov
Keyword(s):  
Stress Intensity ◽  
Residual Stresses ◽  
Stress Intensity Factors ◽  
Intensity Factors ◽  
Local Material

scholarly journals Restoration of soil fertility of the southern chernozem in conditions of the reserve regime of the Orenburg State Nature Reserve

2018 ◽  
Vol 7 (2) ◽  
pp. 126-129
Author(s):  
Alexander Nikolaevich Tyurin
Keyword(s):  
Heavy Metals ◽  
Soil Profile ◽  
Nature Reserve ◽  
Specially Protected Natural Areas ◽  
Southern Chernozem ◽  
State Nature Reserve ◽  
Protected Natural Areas ◽  
Phosphorus And Potassium ◽  
State Nature

This paper presents a comparative-temporal ecological characterization of the southern chernozem under the regime of the Aituar steppe site command of the Orenburg State Nature Reserve. The degree of ecological rehabilitation of chernozems in specially protected natural areas is shown. Quantitative data are provided on the supply of soil with nitrogen, phosphorus and potassium, and the content of heavy metals in the soil. Determination of the content of heavy metals and trace elements in soil samples (according to the method of Krupsky and Aleksandrova in the modification of the Central Institute of Agrochemical Services for Agriculture) was conducted in accordance with GOST 50683-94. The determination of mobile compounds of phosphorus and potassium was carried out by the method of Machigin (GOST-26205-91), organic matter by the Tyurin method (GOST 26213-9), alkaline hydrolyzable nitrogen by Kornfield. The paper presents the results of a comparison of agrochemical and ecology-toxicological studies of southern chernozem in 1996-2016. The main morphogenetic characteristics of the soil profile of the chernozem of the southern carbonate low-humus low-mass medium loamy are given. Data of morphological, physical and agrochemical properties of soils were subjected to mathematical and statistical treatment. This allowed the authors to determine morphological parameters, qualitative and quantitative characteristics of the soil and their variation within the elementary soil areas, depending on the position in the landscape and the nature of use. The data obtained indicate a positive dynamics in the provision of soil with humus and elements of mineral nutrition of plants, as well as a significant reduction in the content of heavy metals throughout the soil profile. Thus, we can talk about the natural restoration of soil fertility in conditions of a protected regime in specially protected natural areas.

scholarly journals KHẢO SÁT CÁC YẾU TỐ ẢNH HƯỞNG ĐẾN QUÁ TRÌNH SẢN XUẤT LOVASTATIN TỪ NẤM Asperillus terreus EV8 BẰNG PHƯƠNG PHÁP LÊN MEN BÁN RẮN

2021 ◽  
Vol 5 (1) ◽  
pp. 2207-2216
Author(s):  
Nguyễn Phạm Tuấn ◽  
Bằng Hồng Lam ◽  
Nguyễn Phạm Tú
Keyword(s):  
Carbon Source ◽  
Abiotic Factors ◽  
Bone Diseases ◽  
Synthesis Process ◽  
Medium Ph ◽  
Fermentation Time ◽  
Medium Carbon ◽  
Statin Group ◽  
Fermentation Method ◽  
Potential Sources

Lovastatin một loại thuốc thuộc nhóm statin và được sử dụng để hạ cholesterol. Lovastatin cũng được sử dụng điều trị bệnh tim mạch vành, bệnh Alzheimer và các bệnh về xương,…. Nấm Asperillus terreus được xem là một trong những nguồn tổng hợp lovastatin, trong quá trình tổng hợp lovastatin chịu ảnh hưởng của nhiều yếu tố sinh học và phi sinh học. Nghiên cứu được thực hiện nhằm đánh giá ảnh hưởng của các yếu tố đến quá trình sản xuất lovastatin từ nấm bằng phương pháp lên men bán rắn. Các yếu tố ảnh hưởng đến quá trình lên men từ nấm Asperillus terreus EV8 như cơ chất, pH, nguồn carbon, nguồn nitrogen và thời gian lên men được đánh giá. Hàm lượng lovastatin được xác định bằng phương pháp đo quang ở bước sóng λ=238 nm. Kết quả nghiên cứu cho thấy, nấm Asperillus terreus EV8 sản xuất lovastatin tốt nhất dưới điều kiện như cơ chất (gạo trắng), pH môi trường (pH = 6), nguồn carbon (glucose 5 g/L), nguồn nitrogen (pepton 5 g/L) và thời gian lên men (8 ngày), hàm lượng lovastatin đạt 4,66 mg/g. ABSTRACT Lovastatin is a drug belonging to statin group and is used to reduce cholesterol. Lovastatin is also applied to treat coronary heart disease, Alzheimer's disease, and bone diseases. Asperillus terreus is considered as one of the potential sources of lovastatin, but the lovastatin synthesis process affected by various biological and abiotic factors. The study was conducted to evaluate the effect of factors on the production of lovastatin from this type of fungi by solid state fermentation method. The effect of factors on the production of lovastatin from Asperillus terreus EV8 as substrates, pH of medium, carbon source, nitrogen and fermentation time were investigated. Lovastatin assay was determined by spectrophotometer at 328 nm. The results showed that Asperillus terreus EV8 strains produced lovastatin under conditions as substrates (rice), pH of medium (pH = 6), carbon source (glucose 5 g/L), nitrogen source (peptone 5 g/L) and fermentation time (8 days) and the amount of lovastatin reaches 4.66 mg/g.  

scholarly journals PEMANFAATAN LIMBAH CAIR TAHU DAN DAUN GAMAL (Gliricidia sepium) SEBAGAI PUPUK ORGANIK CAIR DENGAN METODA FERMENTASI DENGAN AKTIVATOR EM4

1930 ◽  
Vol 8 (01) ◽  
pp. 127-135
Author(s):  
Hasmalina Nasution ◽  
Henny D J ◽  
Ulsanna Laira
Keyword(s):  
Fermentation Process ◽  
Anaerobic Fermentation ◽  
Organic Fertilizer ◽  
Harmful Effect ◽  
Liquid Waste ◽  
Gliricidia Sepium ◽  
Fermentation Time ◽  
Quality Requirements ◽  
Industry Waste ◽  
Phosphorus And Potassium

Liquid organic fertilizer is organic fertilizer in a liquid preparation as apart or all of from organic compound such as plant, animal, and industry waste, solid or liquid phase Nutrients contained therein form of a solution that is so fine that is easily absorbed by plants, though the leaves or stems. Organic fertilizer is one of solution to recovery physical, chemical and biological soil mineral from harmful effect at synthetic fertilize. Liquid fertilizer is obtained from the fermentation process solid first and then proceed with the extraction and liquid anaerobic fermentation process.In the fermentation process, the role of microbes largely determine the resulting product.The aim of this study was to determine the potential of liquid waste out as a liquid organic fertilizer with the addition of leaves of Gliricidia plants with a variation of 200 gr and 400 gr to increase mocro and micro nutrients with EM4 bacteria activator by fermentation procces. Macro nutrients result show Nitrogen 1250,57 ppm, phosphorus 1626,51 ppm potasium 2987,45 ppm, C-organic 8550 ppm, the ratio of C/N 7, and micro nutrients (Fe, Cu, Mn) C organic result Fe 57.99 ppm, Cu 0.30 ppm, Mn 2.83 ppm in the optimum fermentation time of 5 days with additional variations Gliricidia leaves 400 g. Macro nutrient of Organic fertilizer produced meets the quality requirements of the regulation which has set the levels of nitrogen, phosphorus and potassium in the amount of <2% or <20000, C organic ≥ 4% (40000 ppm), the ratio of C / N ≥ 4 ppm. Micro nutrients result do not meet the quality requirements of the agriculture minister No.28/Permentan/OT.140/2/2009. quality regulations for, and metal 100-1000 ppm.

Production and Characterization of Exopolysaccharides from Loss Cooked Sweet Potatoes (Ipomoea batatas) by Lactobacillus Plantarum

2021 ◽  
Vol 2 (7) ◽  
pp. 01-11
Author(s):  
Robert Germain Beka ◽  
Emmanuel Akdowa Panyoo ◽  
Germaine Yadang ◽  
Pamela Homsi ◽  
Laurette Blandine Mezajoug Kenfack ◽  
...  
Keyword(s):  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Chemical Characterization ◽  
Sweet Potatoes ◽  
Fermentation Time ◽  
Total Sugars ◽  
Titrable Acidity ◽  
Lactic Acid Content

The aim of the work was to produce and characterize the exopolysaccharides from loss cooked sweet potato (Ipomoea batatas) using fermentation with Lactobacillus. The cooked sweet potato was fermented according to the factorial design with the following factors: the time (21.51h-38.48h) and the amount of Lactobacillus (1.58*106-5*106UFC). Responses were represented by production yield, pH, and titrable acidity. Characterization of the exopolysaccharides was then done by determination of total sugars, solubility index and viscosity. The results show that the pH of unfermented cooked potatoes was between 6.23 to 6.63. The pH of fermented potatoes varies from 3.96 to 4.06. The lactic acid content was found from 7.75 to 9.9% for the fermented samples. The production yields are 1.90% for the samples fermented for 21.5 hours with 3.5*106UFC of bacteria and 5.62% for those fermented for 30 hours with the same volume of inoculum. The average viscosity of the products was 4mPas regardless of the fermentation time. Chemical characterization indicates glucose contents of 68.21 and 94.01% in fermented potato for 24h and 21h respectively. The solubility index gives values of 70.3 ± 0.16 and 88.11 ± 0.23 for fermentation times of 21h and 24h respectively. Results of this work indicated that cooked sweet potatoes ferment for 21h was a promising substrate for production of exopolysaccharides.

scholarly journals Effects of Soaking and Fermentation Time on Biogenic Amines Content of Maesil (Prunus Mume) Extract

Foods ◽  
2019 ◽  
Vol 8 (11) ◽  
pp. 592
Author(s):  
Yoon ◽  
Koh ◽  
Choi ◽  
Moon
Keyword(s):  
Biogenic Amines ◽  
Biogenic Amine ◽  
High Performance ◽  
Amino Acid Content ◽  
Total Amino Acid ◽  
Prunus Mume ◽  
Brown Sugar ◽  
Fermentation Time ◽  
Amine Content ◽  
Total Amino Acid Content

Maesil extract, a fruit-juice concentrate derived from Prunus mume prepared by fermenting with sugar, is widely used with increasing popularity in Korea. Biogenic amines in maesil extract were extracted with 0.4 M perchloric acid, derivatized with dansyl chloride, and detected using high-performance liquid chromatography. Among 18 home-made maesil extracts collected from different regions, total biogenic amine content varied from 2.53 to 241.73 mg/L. To elucidate the effects of soaking and fermentation time on biogenic amine content in maesil extract, maesil was soaked in brown sugar for 90 days and the liquid obtained was further fermented for 180 days at 15 and 25 °C, respectively. The main biogenic amines extracted were putrescine and spermidine and the total biogenic amine content was higher at 25 °C than at 15 °C. Soaking at 15 and 25 °C increased the total biogenic amines content from 14.14 to 34.98 mg/L and 37.33 to 69.05 mg/L, respectively, whereas a 180 day fermentation decreased the content from 31.66 to 13.59 mg/L and 116.82 to 57.05 mg/L, respectively. Biogenic amine content was correlated with total amino acid content (particularly, arginine content). Based on these results, we have considered that biogenic amine synthesis can be reduced during maesil extract production by controlling temperature and fermentation time.

Determination of Nitrogen, Phosphorus, and Potassium in Water-Soluble Fertilizers by Inductively Coupled Plasma Emission Spectrometry

1987 ◽  
Vol 70 (4) ◽  
pp. 760-761
Author(s):  
Danton D. Nygaard ◽  
John J. Sotera
Keyword(s):  
Inductively Coupled Plasma ◽  
Water Soluble ◽  
Emission Spectrometry ◽  
Inductively Coupled ◽  
Extension Tube ◽  
Plasma Emission Spectrometry ◽  
Phosphorus And Potassium ◽  
Icp Torch ◽  
Nitrogen Phosphorus

Abstract A modification of an inductively coupled plasma (ICP) emission spectrometer is described that enables the simultaneous determination of nitrogen, phosphorus, and potassium in water-soluble fertilizers. A quartz extension tube is added to the ICP torch to exclude air from the plasma, thus allowing accurate nitrogen determination without adversely affecting sensitivity for other analytes. The modification also requires an 18 mg/L argon coolant flow to protect the tube from the heat of the plasma. Detection limits are 20 mg/L for nitrogen and 50 μg/L for phosphorus and potassium. Three NBS reference salts and 2 commercially available fertilizers were analyzed by the method, and results are in excellent agreement with known values.

scholarly journals Determination of Indigenous Nutrient Supplying Capacity of Soil Through Omission Plot Experiment for Wheat in Western Terai of Nepal

2018 ◽  
Vol 35 (1) ◽  
pp. 79-87
Author(s):  
N. Rawal ◽  
N. Khatri ◽  
C. B. GC ◽  
B. P. Chaurasiya
Keyword(s):  
Grain Yield ◽  
Small Area ◽  
Optimum Dose ◽  
Experimental Site ◽  
Wheat Growth ◽  
Wheat Cultivation ◽  
Limiting Nutrient ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

The field experiment was conducted to estimate the native nutrient supplying capacity of soil in western terai of Nepal during 2013/14 and 2014/15. The experimental site consisted three areas: Pakadi VDC ward no.-3, Barrohiya of Kapilvastu district; Ramgram municipality ward no.-1, Sanda of Nawalparasi district and Tukuligadh VDC ward no.-1, Rehara of Rupandehi district. The indigenous nutrients supplying capacity of the soil was determined by establishing omission plots for wheat cultivation with six treatments each of 50 m2 and 4 farmers from each site was taken assuming one farmer as one replication. Among the six treatments, -N, -P, -K, –Zn and –B were set to estimate the inherent N, P, K, Zn and B supplying capacity of soil respectively. From two years of experiment, it has been clear that inherent N and K supplying capacity of soil in selected areas is very low. The highest grain yield of 3.33 t/ha and 2.75 t/ha was measured from fully fertilized plots in 2013/14 and 2014/15 respectively and the lowest grain yield of wheat was obtained from nitrogen missing plots in both years (1.74 t/ha and 1.51 ton/ha) followed by potassium missing plots (1.74t/ha). Farmers manage their field in a different way, so large variation was seen even in small area. Nitrogen was found to be most limiting nutrient for wheat growth followed by potassium and phosphorous in all sites. Therefore, use of optimum dose of nitrogen, phosphorus and potassium should be used for efficient nutrient uptake which ultimately increases wheat productivity.

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