scholarly journals THE EFFECT OF FERMENTATION METHOD, MICROBES INOCULATION AND CARBON SOURCE PROPORTION ON THE QUALITY OF ORGANIC FERTILIZER MADE FROM LIQUID WASTES OF CHICKEN SLAUGHTERHOUSE

2013 ◽  
Vol 38 (4) ◽  
Author(s):  
Y. Sastro ◽  
B. Bakrie ◽  
N.R. Sudolar
Keyword(s):  
Carbon Source ◽  
Organic Fertilizer ◽  
Fermentation Method ◽  
Liquid Wastes

The Cooling Rate Effect on Graphene Synthesis Using Low Pressure Chemical Vapor Deposition

2021 ◽  
Author(s):  
Byoungdo Lee ◽  
Weishen Chu ◽  
Wei Li
Keyword(s):  
Chemical Vapor Deposition ◽  
Reaction Time ◽  
Carbon Source ◽  
Cooling Rate ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Feeding Time ◽  
Process Variables ◽  
Pressure Chemical

Abstract Low-pressure chemical vapor deposition (LPCVD) is the most efficient method to synthesize large-scale, high-quality graphene for many potential applications such as flexible electronics, solar cells, and separation membranes. The quality of LPCVD is affected by process variables including methane/hydrogen (CH4/H2) ratio, time, pressure, temperature, and cooling rate. The cooling rate has been recognized as one of the most important process variables affecting the amount of carbon source, nucleation, reaction time, and thus the quality of the LPCVD. In this research, we investigate the effect of cooling rate on the quality of graphene synthesize by changing the cooling rate and the gas feeding time. Graphene coverage is measured by Raman mapping. It is found that fast cooling rate leads to decreased carbon source reaction time, which in turn results in higher coverage by monolayer graphene. The temperature-dependent gas feeding time corresponding to different cooling rates can be used to properly supply the carbon source onto the copper surface, also leading to a higher graphene coverage.

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 review artikel study

2020 ◽  
Author(s):  
mulono apriyanto bin sugeng rijanto
Keyword(s):  
Mixed Culture ◽  
Fermentation Process ◽  
Improve Quality ◽  
Drying Method ◽  
Cocoa Beans ◽  
Sun Drying ◽  
Fermentation Method ◽  
Result Show ◽  
Traditional Process

Most cocoa beans in Indonesia are traditionally produced by farmers using non fermented and sun drying method. Thequality of cocoa beans produced by farmer in yogyakarta may be improved by the fermentation method. However, it needsoptimization for best fermentation process. The aims of the study was to improve quality of cocoa bans by fermentation ofsun dried cocoa beans. The characteric fermented cocoa beans was determined by maesuring changes pH, acidity andfermentation indexs of cocoa beans during fermentation. This study used preconditioned cocoa beans to resamble obtainfrom the farmer. Preconditioning was done in order to get 15% mouisture content of pulp at same level as moisture contentof pulp from traditional process. Before fermentation, therefor sun dried cocoa beans was rehydrated to obtain a moisturecontent of pulp similiar to fresh beans pulp, and then fermentation was conducted for 120 hours. Changes in acidity andfermentation indexs of cocoa beans during fermentation were measured. The fermentation process used 3 level treatmenti.e. control (without inoculum), mixed culture of microbies added at the begining fermentation. The result show all cocoabeans acidity increase during fermentation from 4,48% to 6,45% for control, 4,64% to 6,39% for addition of inoculum atbegining of fermentation and from 4,45% to 6,59% for addition of inoculum at the begining and midle of fermentation andfermentation indexs of cocoa beans increase for all level of inoculum addition i.e. 0,31 to 0,88 for control, 0,32 to 0,99 foraddition of inoculum at the beginning fermentation and 0,33 to 1,03 for addition of inoculum at the beginning and midle offermentation. The study indicated that addition of mix culture microbies in fermetation improved the quality of cocoabeans that characterized by pH, acidity and fermentation indexs of cocoa beans.

scholarly journals Study of Socio-Economic Condition and Constraints faced by the Rice Growing Farmers in Adoption of Organic and Bio-Fertilizer in Bilaspur District of Chhattisgarh

2021 ◽  
Vol 8 (7) ◽  
pp. 43-47
Author(s):  
Ayush Emmanuel Lal ◽  
Dr. Syed H. Mazhar ◽  
Jahanara Jahanara
Keyword(s):  
Statistical Analysis ◽  
Economic Condition ◽  
Organic Fertilizer ◽  
Structured Interview ◽  
Poor Quality ◽  
Weighted Mean ◽  
Long Distance ◽  
Interview Schedule ◽  
Lack Of Knowledge

The present study was conducted in Bilaspur district of Chhattisgarh to find out socio-economic condition and constraints faced by rice growing farmers in adoption of organic and bio-fertilizer. A total of 120 respondents were selected randomly for the present study. The data was collected through a pre-structured interview schedule and later appropriate statistical analysis was done to find out meaningful results. The result showed that there were eight main constraints perceived by the farmers which were complicated method of application, long process of organic fertilizer preparation, lack of knowledge about type and recommended doses, supply agency at long distance, lack of guidance from extension personal, organic and Bio-fertilizer are costly, lack of conviction about the merits of the practice and mishandling and poor quality of bio-fertilizer out of which mishandling and poor quality of bio-fertilizer with weighted mean score of 2.47 ranked I and Long process of organic fertilizer preparation with weighted mean score of 2.16 ranked II.

Effects of Organic Fertilizer on Growth Performance and Postharvest Quality of Pak Choy (Brassica rapa subsp. chinensis L.)

2021 ◽  
Vol 1 (1) ◽  
pp. 43-50
Author(s):  
Nur Suhaida Mohamad ◽  
Faizah Abu Kassim ◽  
Norhanizan Usaizan ◽  
Azimah Hamidon ◽  
Zahir Shah Safari
Keyword(s):  
Plant Growth ◽  
Growth Performance ◽  
Block Design ◽  
Organic Fertilizer ◽  
Fertilizer Application ◽  
Leaf Length ◽  
Leafy Vegetables ◽  
Chicken Manure ◽  
Postharvest Quality

Long-term use of inorganic fertilizers on leafy vegetables can increase soil acidity, harmful to the environment and leaving bad effects on human health. Organic fertilizer application is one of the safer alternatives with many beneficial effects by supplying nutrients for plant growth, environmental-friendly and producing an optimum quality of vegetables. Different organic amendment such as vermicompost, biochar and microbial compost has different effect on plant growth performance since good bacteria could improve structure of the soil and nutrient absorption. Therefore, this study aims to evaluate the effects of organic fertilizer on the growth performance and postharvest quality. The experimental design during planting was conducted in randomized completely block design with a factorial arrangement of treatmentswhile for postharvest quality study was conducted in completely randomized design. Organic fertilizer of vermicompost (110 g/plant), biochar (100 g/plant), microbial compost (80 g/plant) and chicken manure (37.5 g/plant) were treated on Pak choy two times on day 10 and day 24 after transplant. This research revealed the plant growth including plant height, leaf number and leaf length of Pak choy in all treatments were increased as growing stage increased. However, at the end of growing stage, microbial compost and vermicompost resulted in the highest of growth characteristics. In terms of postharvest quality, microbial compost showed the highest fresh weight and premium quality. This study proved that microbial compost at 80 g/plant exhibited optimum growth performance and the best postharvest quality of Pak choy.

PENGARUH PUPUK ORGANIK DAN ANORGANIK ZA DAN SP 36 TERHADAP HASIL DAN MUTU TEMBAKAU TEMANGGUNG PADA TANAH ANDISOL

2020 ◽  
Vol 8 (1) ◽  
pp. 32
Author(s):  
DJAJADI DJAJADI ◽  
M. SHOLEH ◽  
NUNUNG SUDIBYO
Keyword(s):  
Key Words ◽  
Ammonium Sulfate ◽  
Ammonium Sulphate ◽  
Organic Fertilizer ◽  
Growth Yield ◽  
Yield And Quality ◽  
Stable Manure ◽  
Grade Index

Effect of organic (biogrcen) and inorganic fetilizers (ammonium sulphate and SP36) on the yield and quality of the temanggung tobacco in andosol soil was studied at Galapansari - Temanggung, from Februai to December 2001. The organic and inorganic fetilizers were formulated in 10 packages, namely : (1) 570 kg ammonium sulphate (AS) ♦ 100 kg SP36; (2) the recommended rate for temanggung tobacco (20 000 kg stable manure 500 kg AS + 100 kg SP36; (3) 5 000 kg organic fetilizer (OF); (4) 7 500 kg OF; (5) 8 500 kg OF; (6) 10 000 kg OF; (7) 12 500 kg OF; (8) 14 500 kg OF; (9) 7 500 kg OF + 3 500 kg sUble manure (SM); (10) 7 500 kg OF + 4 500 kg SM. All the rates of fetilizers were based on one hectare planted area (16 500 plants) The expeiment was designed as a randomized block in four replicates. Results showed that organic fertilizer waa more effective than stable manure in improving die growth, yield and quality of temanggung tobacco. A the rate of 5 000 kg was sufficient to produce high ( 6 313 kg fresh or 800 kg sliced died leaves), grade index (51.68) and crop index (55.31). Key words : Organic fetilizer, ammonium sulfate, SP36, temanggung tobacco, andisol

PENGARUH ASAM FULVAT TERHADAP PERTUMBUHAN, PRODUKTIVITAS, DAN MUTU RIMPANG JAHE

2020 ◽  
Vol 7 (1) ◽  
pp. 6
Author(s):  
MUHAMAD DJAZULI ◽  
IRENG DARWATI ◽  
ROSITA SMD
Keyword(s):  
Fulvic Acid ◽  
Starch Content ◽  
Block Design ◽  
Organic Fertilizer ◽  
Dry Weight ◽  
Fertilizer Application ◽  
Randomized Block Design ◽  
Application Frequency ◽  
Optimal Effect

Fulvic acid is an extraction product of humus which is very potential for supplement fertilizer and able to reduce either inorganic or organic fertilizer application. The information about fulvic acid application as supplement fertilizer on ginger in Indonesia is still limited. The objective of the study was lo find oul the efect of fulvic acid as supplement fertilizer on the growth, productivity and quality of young ginger. A green house trial was conducted from July lo November 1996. Five levels of fulvic acid concentration, 0, 2.5, 5, 7.5, and 10% were sprayed every week from 4 to 1 5 weeks ater planting (WAP). A randomized block design was used with five replicates. The results indicated that the growth of plant height and number of tiller of ginger increased rapidly al 8 WAP, then il became slowly from 12 lo 1 5 WAP Application 10% of fulvic acid was able to increase vegetative parts 99.6%, fresh and dry weight of rhizome 89 and 125% respectively, and starch content of rhizome 22.6%. To find oul of the optimal effect of fulvic acid on productivity and quality of ginger, a further research using higher level and application frequency of fulvic acid as an extract product from several humus types in Indonesia is needed.

Sign in / Sign up

Export Citation Format

Share Document