Effects Of Alkaline And Acid Treatment To The Yield And Quality Of Chitosan Extracted From Absidia sp. dr

2012 ◽  
Author(s):  
Kalaivani Nadarajah ◽  
Dawn Carmel Paul ◽  
Abdul Jalil Abdul Kader
Keyword(s):  
Molecular Weight ◽  
High Temperature ◽  
Key Words ◽  
Acid Concentration ◽  
Acid Treatment ◽  
Strong Acid ◽  
High Acid ◽  
Yield And Quality ◽  
High Acid Concentration

Da. Employment of strong acid, high acid concentration and high temperature produced darker coloured chitosan whereas milder treatments gave lighter coloured chitosan. Key words: Chitosan, Absidia sp. dr, degree of deacetylation, molecular weight

Crystallization of Isotactic Poly(propylene) in Solution as Followed by Slow Calorimetry

1995 ◽  
Vol 60 (11) ◽  
pp. 1905-1924 ◽  
Author(s):  
Hong Phuong-Nguyen ◽  
Geneviève Delmas
Keyword(s):  
Molecular Weight ◽  
Crystal Growth ◽  
High Temperature ◽  
Heat Of Fusion ◽  
Complete Dissolution ◽  
Polymer Molecular Weight ◽  
Solvent Quality ◽  
Temperature Ramp ◽  
Poly Propylene

Dissolution, crystallization and second dissolution traces of isotactic poly(propylene) have been obtained in a slow temperature ramp (3 K h-1) with the C80 Setaram calorimeter. Traces of phase-change, in presence of solvent, are comparable to traces without solvent. The change of enthalpy on heating or cooling, ∆Htotal, over the 40-170 °C temperature range, is the sum of two contributions, ∆HDSC and ∆Hnetwork. The change ∆HDSC is the usual heat obtained in a fast temperature ramp and ∆Hnetwork is associated with a physical network whose disordering is slow and subject to superheating due to strain. When dissolution is complete, ∆Htotal is equal to ∆H0, the heat of fusion of perfect crystals. The values of ∆Htota for nascent and recrystallized samples are compared. Dissolution is the tool to evaluate the quality of the crystals. The repartition of ∆Htotal, into the two endotherms, reflects the quality of crystals. The crystals grown more rapidly have a higher fraction of network crystals which are stable at high T in the solvents. A complete dissolution, i.e. a high temperature (170 °C or more) is necessary to obtain good crystals. The effect of concentration, polymer molecular weight and solvent quality on crystal growth is analyzed.

scholarly journals Effect of Fertilizers on the Incidence of Anthracnose Disease, Yield and Quality of Mango

1970 ◽  
pp. 70-78
Author(s):  
MNA Chowdhury ◽  
MA Rahim
Keyword(s):  
Key Words ◽  
Fruit Set ◽  
Combined Effect ◽  
Anthracnose Disease ◽  
Untreated Plant ◽  
Combined Application ◽  
Yield And Quality ◽  
Treated Plant

Effect of different fertilizers on the control of anthracnose disease, yield and quality of mango cv Amrapali was investigated. Application of combined fertilizers gave the highest fruit set, fruit retention and fresh fruits, therefore, produced the highest yield per plant and per hectare. The highest number of healthy fruits was found from 2nd year crop and the lowest was obtained from 1st year. The highest (8.47 t/ha) yield was obtained from 2nd year and the lowest (4.58 t/ha) was obtained from 1st year crop. Among the treatments, combined application of NPK, ZnSo4, Gypsum and Cowdung gave the highest (50.67) number of healthy fruits and the lowest (16) was obtained from untreated plant. The highest (12.41 t/ha) yield was obtained from combined application of NPK, ZnSo4, Gypsum and Cowdung and the lowest (3.88 t/ha) was obtained from untreated plant. In respect of combined effect, the highest (15.22 t/ha) yield was obtained from 2nd year x T9 treated plant and the lowest (2.95 t/ha) was found in untreated 1st year plant. Key words: Mango, fertilizers, anthracnose, yield. DOI = 10.3329/jard.v5i1.1461 J Agric Rural Dev 5(1&2), 70-78, June 2007

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

Effect of organic fertilizers on yield and quality indicators of cotton and sorghum plant against mineral fertilizer background

2021 ◽  
Vol 03 (01) ◽  
pp. 35-39
Author(s):  
Səkinə Hüseynağa qızı İsmayılova ◽  
◽  
Elba Ehsan qızı Rüstəmova ◽  
Rəşidə Elşən qızı Şükürova ◽  
◽  
...  
Keyword(s):  
Key Words ◽  
Quality Indicators ◽  
Mineral Fertilizer ◽  
Organic Fertilizers ◽  
Mineral Fertilizers ◽  
Meadow Soil ◽  
Cotton Crop ◽  
Yield And Quality ◽  
Sorghum Plant

In order to study the influence of organic fertilizers against the background of minerals on the yield and quality of cotton and sorghum, experiments were laid under the conditions of gray-meadow soil of the Shirvan zone. As a result of the studies, it was found that the highest crop was obtained in versions where biohumus and mineral fertilizers were co-introduced. So in these versions, the cotton crop is 12.9 c/ha or 66.1%, and the sorghum crop is 8.5 c/ha or 42.5%, respectively, compared to a control without fertilizers. Key words: organic fertilizers, mineral fertilizers, cotton, sorghum, productivity

Effects of Groundwater Cooling Treatment on Growth, Yield, and Quality of Strawberries under High Temperature Conditions

2018 ◽  
Vol 27 (8) ◽  
pp. 631-639
Author(s):  
Gyu-Bin Lee ◽  
Jung-Eun Lee ◽  
Yun-Ui Choe ◽  
Young-Hoon Park ◽  
Young-Whan Choi ◽  
...  
Keyword(s):  
High Temperature ◽  
Growth Yield ◽  
Temperature Conditions ◽  
Yield And Quality

scholarly journals EFFECT OF ULTRASOUND ON PRETREATMENT OF TUNA SKIN FOR GELATIN PRODUCTION

2018 ◽  
Vol 54 (4A) ◽  
pp. 55
Author(s):  
Dang Minh Nhat
Keyword(s):  
Lipid Content ◽  
Acid Treatment ◽  
Treatment Method ◽  
Alkaline Treatment ◽  
Extraction Yield ◽  
Gel Strength ◽  
Yield And Quality

This paper presents the result of study on the effect of ultrasound on extraction yield and quality of gelatin obtained from tuna skins using alkaline treatment method and alkaline-acid treatment method with ultrasound assistance. The results showed that ultrasound could shorten the time of alkaline treatment, while ensured the yield and the quality of obtained gelatin. Accordingly, the appropriate parameters of ultrasound mode that gave the best yield and quality of gelatin were determined as follows: for alkaline treatment method: amplitude of 80 %, period of 0.8s and ultrasound time of 90 min; for the alkaline-acid treatment method: amplitude of 8 0%, period of 0.8s and ultrasound time of 30 min. The former method produced gelatin with better yield and gel strength compared to the latter one (22.7 % and 143.3 g in comparison with 15.8 % và 122.4 g, respectively). The method with ultrasound support gave the gelatin with better quality in term of lipid content and gel strength in comparison with the traditional alkaline treatment method without ultrasound assistance.

Grain growth and malting quality of barley. 2. Effects of temperature regime before heat stress

1997 ◽  
Vol 48 (5) ◽  
pp. 625 ◽  
Author(s):  
Roxana Savin ◽  
Peter J. Stone ◽  
Marc E. Nicolas ◽  
Ian F. Wardlaw
Keyword(s):  
Heat Stress ◽  
High Temperature ◽  
Grain Growth ◽  
Gradual Increase ◽  
Grain Weight ◽  
Malting Quality ◽  
Yield And Quality ◽  
Grain Yield And Quality ◽  
Very High

Short periods of very high maximum temperature (>35°C) during grain filling appear to reduce grain yield and quality in barley. Tolerance of grain yield and quality to heat stress may be increased when acclimation to high temperature occurs. Two experiments were performed to test the hypothesis that a gradual (or stepped) increase to very high temperature reduces the impact of that stress on grain growth and quality of barley, compared with a sudden increase over the same temperature range. Plants experiencing either a sudden or a gradual increase did not exhibit any differences in grain weight or malting quality, but increasing the temperature in 2 steps (so that plants were exposed to 30 or 34°C for 2 h before a 40°C heat stress) appeared to have produced acclimation, since the reduction in grain weight under the 2-step treatment was about half that of either a sudden or gradual increase in temperature. Heat stress altered grain composition in various ways. The reduction in final grain weight was strongly and linearly related to the reduction in starch content. Grain β-glucan was 4·5 ± 0·5% across treatments and experiments and was significantly reduced in the glasshouse but not in the phytotron experiment. However, β-glucan degradation was similar between treatments in both experiments. Grain nitrogen concentration was very high and similar between treatments. Consequently, diastatic power was high and there was a trend towards a reduction under heat stress. Free amino nitrogen was higher under heat stress, indicating a higher protein modification than in the controls. Malt extract was significantly reduced by heat stress in the glasshouse experiment.

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