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Articles by A.B.M. Sharif Hossain
Total Records ( 12 ) for A.B.M. Sharif Hossain
  A.B.M. Sharif Hossain , Aishah Salleh , Amru Nasrulhaq Boyce , Partha chowdhury and Mohd Naqiuddin
  Biodiesel is biodegradable, less CO2 and NOx emissions. Continuous use of petroleum sourced fuels is now widely recognized as unsustainable because of depleting supplies and the contribution of these fuels to the accumulation of carbon dioxide in the environment. Renewable, carbon neutral, transport fuels are necessary for environmental and economic sustainability. Algae have emerged as one of the most promising sources for biodiesel production. It can be inferred that algae grown in CO2-enriched air can be converted to oily substances. Such an approach can contribute to solve major problems of air pollution resulting from CO2 evolution and future crisis due to a shortage of energy sources. This study was undertaken to know the proper transesterification, amount of biodiesel production (ester) and physical properties of biodiesel. In this study we used common species Oedogonium and Spirogyra to compare the amount of biodiesel production. Algal oil and biodiesel (ester) production was higher in Oedogonium than Spirogyra sp. However, biomass (after oil extraction) was higher in Spirogyra than Oedogonium sp. Sediments (glycerine, water and pigments) was higher in Spirogyra than Oedogonium sp. There was no difference of pH between Spirogyra and Oedogonium sp. These results indicate that biodiesel can be produced from both species and Oedogonium is better source than Spirogyra sp.
  A.B.M. Sharif Hossain , Amru Nasrulhaq Boyce and Haji Mohamed A. Majid
  The study was conducted to investigate the effect of ethanol at different concentrations (ET) on bougainvillea flower longevity and delay senescence in storage condition. The treatments were water control, 2, 4, 8, 10, 20, 30, 40, 50 and 70% ET. Flower longevity was 2 days more in 4, 8 and 10% ethanol than water control and other concentrations of ethanol. Petal wilting and senescence were occurred 2 days later in 4, 8 and 10% ET than in water control. Percent petal’s color changed was later in water 4, 8 and 10% than in control, 2, 20, 30, 40, 50 and 70% ET. Chlorophyll fluorescence intensity (photosynthetic yield) followed by time (ms) at different ethanol concentrations was higher in 4, 8 and 10% ET than in water control and other concentrations. Fo (lower fluorescence) was lower in 4, 8 and 10% ET than in water and other concentrations. However, Fm and Fv [(higher fluorescence and relative variable fluorescence (Fm-Fo)] were higher in 4, 8 and 10% ET than in other ET concentrations. Fv/Fm (quantum yield or photosynthetic yield) was higher in 4, 8 and 10% ET than in other ET concentrations. The result showed flower vase life was significantly affected by ethanol concentrations and longevity was higher in 4, 8 and 10% ethanol than in water control and other concentrations.
  A.B.M. Sharif Hossain
  The study was carried out to investigate the biodiesel yield and quality with different alkaline and acid catalysts from algae. Algal species, Spirogyra was used to produce biodiesel applying the alkaline and acid transesterification process. A single homogenous catalyst (KOH) and heterogenous mixture of catalysts (KOH+NaOH+H2SO4) were treated to obtain a high quality biodiesel fuel that complied with the specifications of the American Standard Testing and Material, ASTM D 6751 and European Norm, EN 14214 standards. The biodiesel yield and the physical and chemical properties of produced biodiesel were evaluated. The highest biodiesel yield of 96.9% was achieved dealing 1:3 volumetric oil-to-methanol proportions by 1.5% mixture of catalysts (NaOH+KOH+H2SO4) at 40°C reaction temperature and a stirring speed of 320 rpm. Biodiesel formation yielded a lower at the rate of 94.9% biodiesel in a single catalyst than in the mixture of catalysts (96.9%). There was no significant difference in the viscosity of the biodiesel produced between the single and mixture of catalysts. However, the total acid number and metal (Na, Ca, Mg, Cu) content differed significantly between the homogenous and heterogenous catalysts of produced biodiesel. There was more methyl ester (biodiesel yield) of biodiesel produced in the mixture of catalysts compared to the biodiesel formed applying a single catalyst. The results showed that biodiesel obtained from Spirogyra sp., under optimum conditions through alkaline and acid bioprocess transesterification was of good quality that could be practiced as a source of diesel fuel.
  A.B.M. Sharif Hossain and Musamma Muddin
  Background and Objectives: Genetically Modified (GM) technology retains an important role to produce GM organism (GMO) and GMO derived food. The study was carried out to investigate GM seedless pumpkin, seedless ladies finger and dwarfed peach plant employing different concentration of GA3 (100 and 150 ppm) and ABA (2000 ppm) hormones and its related gene expression. Materials and Methods: The treatments were used in expt. 1 as water control and abscisic acid (ABA) 2000 ppm applied to the partially peach barked tissue. Injection method was used in expt. 2 to make seedless pumpkin. Star fruit flower buds were dipped for 2 weeks with GA3 150 ppm and water control in expt. 3. The concentration of IAA 200 ppm were applied to the ladies finger's flower by injecting in Expt. 4. Results: From the results it was observed that bark tissue, shoot and root were inhibited by ABA hormone. Whereas in control plant, there was no inhibition occurred. In expt. 2, it had been shown that fruit weight was higher in the GA3 treated fruit than in control. However, seed number and per seed weight were higher in the control than the GA3 treated pumpkin. Glucose, fructose potassium and calcium content were found higher in the GA3 treated pumpkin than the control. In expt. 3, fruit weight was higher in the GA3 treated fruit than in control. However, seed number was higher in the control than the GA3 treated fruit. In expt. 4, the maximum pod length, TSS and vitamin C were obtained in IAA 200 mg L–1 compared to the control. The highest seedless pod was found in IAA 200 mg L–1. Conclusion: From the results it has been seen that maximum seedless pod was 100%. Positively gene was expressed by ABA 2000 ppm and GA3 150 ppm.
  A.B.M. Sharif Hossain
  Biomass is plant or animal derived source of material that can be converted into different forms of bioenergy and biosolvent using different biotechnological procedures. Biomass is biodegradable, sustainable, economic sources as well as renewable and outstanding energy and biomaterial resource for the manufacturing industries like bio-plastics, bio-film, biomaterials, bio-chemicals, bio-fuels, bio-electricity, bio-solvent in the agro-industry, pharmaceuticals, biomedical and bioengineering aspect. The study was conducted to investigate the biodiesel and bioethanol yield and quality with different alkaline-acid catalysts and fermentation technology using algal oil extracted from algae and its biomass residues. Algal species, Spirogyra was used to produce biodiesel from algal oil applying the alkaline and acid transesterification process and bioethanol from algal biomass residues. In biodiesel production, single homogenous catalyst (KOH) and heterogenous mixture of catalysts (KOH+NaOH+H2SO4) were treated to obtain a high quality biodiesel fuel. The highest biodiesel yield of 96.9% was achieved dealing 1:4 volumetric oil-to-methanol proportions by 1.5% mixture of catalysts (NaOH+KOH+H2SO4). The lowest biodiesel yield was found 95.8% by 1.5% of single catalyst (KOH). There was no significant difference in the viscosity of the biodiesel produced between the single and mixture of catalysts. However, the total acid number and metal content differed significantly between the homogenous and heterogenous catalysts of produced biodiesel. In bioethanol production, bioethanol yield was found (15%) higher in the cellulase enzyme than in lipase enzyme (11%) fermentation. The results conclude that biodiesel and bioethanol obtained from algal oil and its residual biomass were of good quality that could be practiced as a source of diesel and bioethanol fuel and solvent.
  A.B.M. Sharif Hossain , F. Mizutani and Justus M. Onguso
  Effects of partial and complete ringing in the trunk on overall nutrient status of peach (Prunus persica Batsch. cv. `Hikawahakuho`) trees were examined by using one-year-old trees. The partial ringing comprised removal of 2 cm length bark and remaining 2 mm strip whereas complete ringing no remaining strip. Organic (sugar and starch) and inorganic nutrient content in leaves, stems and roots were monitored for eight weeks after ringing. The treatment reduced overall reduction in sugar and starch content in all plant parts. Each sugar component also showed similar trends. The N and Ca content in the above ground parts were lower in the ringed plants than control but the reverse was true in the roots. On the other hand, P, K and Mg content in all plant parts were declined by the treatment. Partial ringing prevented the translocation of 13C-photosynthates from the above ground parts to roots although entire inhibition was apparent in the complete ringing. Such reduction in energy sources of the roots seemed to affect overall plant nutrition which leads to small sized trees.
  Mohammed Saifuddin , A.B.M. Sharif Hossain , Normaniza Osman and K.M. Moneruzzaman
  A field experiment was conducted to assess the effect of gibberellic acid (GA3 100 and 150 ppm), phloemic stress and combination of 100 ppm GA3 and phloemic stress on Bougainvillea bract blooming, expansion, development and bract longevity under exposed sun light condition (400-700 μEm-2 sec-1). A seven-years-old Bougainvillea plant was used in this experiment. Fifteen selected brunches were applied with 100, 150 ppm GA3, phloemic stress, 100 ppm GA3+phloemic stress and water control. The results showed that 100 ppm GA3 increased the length of petiole, bract size and shape by 40%. Bract blooming was three days earlier in 100 ppm GA3 treated branches and 4 days earlier in 150 ppm GA3 than in water control. Bract longevity (required days from bract initiation to abscission) was higher for 4 in phloemic stress and for 2 days in 100 ppm GA3+phloemic stress than in water control. However, bract longevity was shorter in 100 and 150 ppm GA3 than in control. The number of bracts per branch was higher in 100 ppm GA3+phloemic stress and phloemic stress than the other treatments. Petal size and petiole length were the highest in 100 ppm GA3. But there were no significant changes in bract size and color development in phloemic stress. Maximum chlorophyll fluorescence was observed in phloemic stress. Quantum yield (Fv/Fm) was higher in phloemic stress and 100 ppm GA3+phloemic stress than in other treatments. The findings suggested that gibberellic acid played an important role to induce rapid bract blooming and expansion whereas, phloemic stress increased total number of bract and longevity.
  Mohammed Saifuddin , Mohammad Moneruzzaman Khandaker , Md. Sarwar Jahan , Nashriyah Binti Mat and A.B.M. Sharif Hossain
  Growth regulator is an important factor to enlarge the flower size in the floriculture industry. Flower growers have a lot of interest in making flower enlargement and shorten longevity to harvest flower earlier and to make it marketable soon. Gibberellic Acid (GA3) and aluminium sulphate Al2(SO4)3 play significant roles in flower enlargement and development. Hibiscus sp. was used in this experiment. The branches were dripped with the respective chemical [GA3 and Al2(SO4)3 100ppm] at 3 days intervals for 3 weeks. It had been shown that the 100 ppm GA3 played major role in developing a bigger size of the flower, production of more leaves, shorter longevity of flower, quicker bloom and greater size and weight of the flower as compared to the Al2(SO4)3 and control. Chlorophyll content (represented by SPAD value) and fluorescence were higher in GA3 treated branch than in aluminium sulphate treated branch and control. The quantum yield (Fv/Fm) was maximal in GA3 treated branch. The aluminium sulphate treated branch also showed the similar results but the longevity of the flower had the longer duration in aluminium sulphate treated branch than in GA3 but shorter than control. The results showed that these two chemicals [GA3 and Al2(SO4)3 100ppm] using dripping technique instead of spray were effective for the enlargement of flower size and shorten the flower longevity with less chemical cost and quantity of chemicals without hazarding the environment instead of spray . In addition, it improved the weight and increased the blooming rate and could be acceptable to the flower growers easily and could be harvested for commercial purposes earlier.
  A.B.M. Sharif Hossain , A. Nasrulhaq Boyce and Haji Mohamed
  Experiments were conducted to study the effects of temperature and ethanol application on the development and quality of the elephant apple fruit. Various treatments were carried out, viz., at room temperature (RT, 28°C), in exposed sunlight (ES, 35°C), in 70% ethanol (ET, 28°C), under plastic covering (PC, 28°C), under plastic covering plus 70% ethanol (PCET, 28°C), at low temperatures (LT, 12°C) and at freezing temperature (FT, -1°C). The longest preservation time was observed in fruits preserved in FT (-1°C) and shortest in fruits preserved in ES (35°C) whilst the maturity index was highest in ES (35°C) treatments and lowest in FT (-1°C) compared to the other treatments at the end of the experiments. However, fruits kept at FT (-1°C) exhibited chilling injury symptoms. Total Soluble Solids (TSS) was highest in ES (35°C) and PCET (28°C) from the 1st to the 7th harvest compared to other treatments. A similar increasing trend in TSS was observed in all the treatments. On the contrary, Titratable Acidity (TA) was highest in FT (-1°C) and LT (12°C) from the 1st till the 7th harvest. Similarly a declining trend of TA was found in all the other treatments. TSS was found to be higher in pulp than in peel in the ethanol treatment at 6, 12, 24, 48 and 72 h. However, TA was higher in peel than pulp. The results showed that low temperatures (LT and FT) and plastic covering with 70% ethanol (PCET) delayed ripening in elephant apple fruits and were the best preservation techniques.
  A.B.M. Sharif Hossain , Wan Mohtar W. Yusoff and Vajid N. Veettil
  Background and Objectives: The exploration of fruit biomass derived biomaterials (bio-antiseptic, biosolvent, biofilm, biofuel) encourages the uses of biomass extensively. Thus, fruits wastes can be reused to generate bioethanol as antiseptic and bio-solvent. The study was carried out to investigate the optimization of bioethanol production and evaluate the bioethanol as anti-fermenter and anti-septic. Materials and Methods: Rotten banana, grape and dates biomasses were used through fermentation bioprocess using yeast. Samples were thoroughly washed with distilled water, cut using a sterile knife and were blended by using a sterilized automatic juice blender. Results: Bioethanol yield was higher in dates biomass than in grape and banana biomass at 3 g L–1 yeast concentration at 30°C. The lowest pH was found in the bioethanol produced from dates biomass. The lower TSS and glucose content was exhibited in the bioethanol produced from banana biomass. The lowest viscosity and acid value was found at 3 mg L–1 of yeast concentration in dates biomass. Chemical elements like Ca, P, Fe, Pb, Cu and Si fulfilled the requirement of the standard specification as well. Grape juice mixing with bioethanol showed antifermenter for 2 days while in the 1st day juice started to rot the faster in the control. The lowest bacterial colony formation was observed in the dates biomass derived bioethanol. Conclusions: Results explored that produced bioethanol was of good quality and can be used as antiseptic and bio-solvent from fruit biomass.
  A.B.M. Sharif Hossain
  Allamanda is an ornamental plant cultivated for their large, yellow and pink colorful flowers in the garden, office and home stead as well as in the occasional place. It makes attractive to the environmental beautification for its color and fragrant. The study was conducted with yellow type of Allamanda flower (Allamanda cathartica) to investigate the effects of gibberellic acid (GA3) and aluminium salt (aluminium sulfate) on the longevity (vase life and senescence) of the flower. Three types of treatments were used water control, gibberellin (GA3) 100 ppm and aluminium sulfate 150 ppm. Gibberellic acid (GA3) and aluminium sulfate were swabbed the bud twice a week for 2 weeks. The fresh weight was higher in the aluminium sulfate 150 ppm than gibberellin (GA3) 100 ppm and control. The decreasing trend of fresh weight was found in the case of all treated flowers. The lowest fresh weight loss was found in the aluminium sulfate 150 ppm then gibberellin (GA3) 100 ppm. Flowers treated with aluminum sulfate (8.19%) absorbed more water than those in GA3 and water control treated flower. Water uptake percentage was the highest in the aluminum sulfate treated flower followed by GA3 and water control treated flower. Senescence was delayed 5 days for aluminium sulfate 150 ppm and 1day for gibberellin (GA3) 100 ppm compared to control flower. Compare to control flower, the vase life of both aluminum and gibberellin treated-flowers were much longer (8.5 and 5.5 days) than control (4 days). The results showed that the best treatment for vase life and delay senescence was Aluminium sulphate 150 ppm and then gibberellin (GA3) 150 ppm.
  A.B.M. Sharif Hossain
  Bougainvillea is a popular ornamental plant in the tropics and sub-tropics of the world. It bursts forth with colorful flowers for the year round if it is planted in the adaptive climate. The ornamental importance of Bougainvillea bract is for the imparting and increasing color effect in the garden. Increasing plantation and beautification of bougainvillea have a scope in drier region and its use in vacant areas as road side plantation, beautification of traffic islands and wide road dividers for its own colorful environment. The study was carried out to investigate the effects of Amino Oxyacetic Acid (AOA) and sucrose on the vase life and senescence of bougainvillea bract. The treatments were used as water control, AOA and sucrose at different concentrations. The decreasing trend of fresh weight was found on the 3rd day and again increased on the 5th day in the case of all treated flowers. The lowest water uptake percentage was found in 4% sucrose and 50 ppm AOA concentration. However, senescence was delayed for 3 days in AOA 50 ppm and 4% sucrose concentration. The vase life of both AOA 50 ppm and 4% sucrose concentration treated-flowers were much longer (4 days) than control compared to the all concentration of sucrose and AOA. The results showed that the best treatment for vase life and delay senescence was AOA 50 ppm and 4% sucrose concentration.
 
 
 
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