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A Study on Tomato Candy Prepared by Dehydration Technique Using Different Sugar Solutions

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Food and Nutrition Sciences 2014年第13期5卷 1261-1271页

作者： md. hasanuzzaman M. Kamruzzaman md. Mominul Islam Sultana Anjuman Ara Khanom md. Mashiar Rahman Laisa Ahmed Lisa Dipak Kumar Paul Department of Applied Nutrition and Food Technology Islamic University Kushtia Bangladesh Department of Microbiology and Biotechnology Jagannath University Dhaka Bangladesh Food Enzymology Research Section Institute of Food Science & Technology Bangladesh Council of Scientific and Industrial Research (BCSIR) Dhaka Bangladesh Vegetable Technology Research Section Institute of Food Science & Technology Bangladesh Council of Scientific and Industrial Research (BCSIR) Dhaka Bangladesh

The aim of the research was to develop a self-stable dehydrated tomato product using different sugar solutions and to study the effects of the sugar solution on the characteristic of tomato candy. Tomato was immersed into the sugar solution with the concentrations of 40%, 50% and 60% for 24 hours. Moisture, ash, protein, fat, vitamin C, acidity, total sugar, crude fiber, total SO2 and salt content and organoleptic quality and microbiological status of the prepared candy were analyzed. There was a tendency of decreasing moisture, ash, protein, fat, vitamin C, acidity, crude fiber and increasing total sugar content with increased concentration of sugar solution used. On the microbiological analysis, total bacteria and total fungus load were increased with increasing the concentration of sugar solution. The best characteristic of tomato candy was found with 40% sugar solution, with highest nutrient and sensory score and lowest microbial load than candy prepared with 50% and 60% sugar solution.

关键词： Tomato Candy Sugar Solution Nutritional Composition Organoleptic Quality Sensory Score Microbial Load

Genotype Environment Interaction (G ×E) of Heat Tolerant Wheat Genotypes over Locations and Years

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American Journal of Plant Sciences 2021年第11期12卷 1633-1645页

作者： md. Abdul Hakim Bhabendra Kumar Biswas md. hasanuzzaman Mohammad Quamrul Islam Matin Most. Bilkis Banu Naresh Chandra Dev Barma Arun K. Joshi Bangladesh Wheat and Maize Research Institute (BWMRI) Dinajpur Bangladesh Department of Genetics and Plant Breeding Hajee Mohammad Danesh Science and Technology University (HSTU) Dinajpur Bangladesh Bangladesh Agricultural Research Institute (BARI) Gazipur Bangladesh Bangladesh Wheat and Maize Research Institute (BWMRI) Dinajpur Bangladesh International Maize and Wheat Improvement Centre (CIMMYT) NASC Complex DPS Marg New Delhi India

Twenty heat tolerant wheat genotypes were evaluated in three heat stress environments of Bangladesh such as Wheat Research Center (WRC), Nashipur, Dinajpur, Regional Wheat Research Center, BARI, Gazipur, Regional Wheat Research Center, RARS, Jashore in 2015-2016. The experiments were conducted in RCBD with three replications in 2015-2016. The stability and response to change of location and sowing time of the genotypes were assessed through AMMI model and regression coefficient analysis on seven characters, viz. days to heading, days to maturity, plant height (cm), spikes m-2, grains spike-1, 1000-grain weight (g) and yield (kg·ha-1). Among the linear interactions, sowing time alone exerted the maximum sum of square (335,388,000.00**) and among the non-linear interactions, location × year paid the highest effect (7,676,490.00**), which was followed by year × location × sowing time interaction (3,956,500.00**). The highest grain yield (4475.3 kg·ha-1) was obtained from the genotype G13, followed by the genotypes G17 (4460.8 kg·ha-1) and G19 (4404.7 kg·ha-1). The genotype G8 had the smallest interaction effect, while the genotype G14 followed by G10 responded vigorously to amelioration. The genotypes G13, G18 and G19 showed averagely high yield and showed stability over the environmental modifications. The other two genotypes G20 and G12 exhibited great reduction of yield potential under unfavorable environment. The environment 121 proceeded by J121 and G131 appeared as favorable environments. The genotypes G13 and G19 produced high yield (kg·ha-1) in the favorable environments. The genotypes G16 and G18 high IPCa1 scores, indicated sensitive to mega-environmental changes. The best genotype with respect to environment was genotype G13. Genotypes G17 and G19 were best for site E1;genotypes G14, G16 and G18 were best for site E2.

关键词： Wheat Genotype Over Location Over Years Heat Stress

Bangla language modeling algorithm for automatic recognition of hand-sign-spelled Bangla sign language

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Frontiers of Computer Science 2020年第3期14卷 45-64页

作者： Muhammad Aminur RAHAMAN Mahmood JASIM md.Haider ALI md.hasanuzzaman Department of Computer Science and Engineering University of DhakaDhaka-1000Bangladesh

Because of using traditional hand-sign segmentation and classification algorithm,many diversities of Bangla language including joint-letters,dependent vowels *** representing 51 Bangla written characters by using only 36 hand-signs,continuous hand-sign-spelled Bangla sign language(BdSL)recognition is *** paper presents a Bangla language modeling algorithm for automatic recognition of hand-sign-spelled Bangla sign language which consists of two *** phase is designed for hand-sign classification and the second phase is designed for Bangla language modeling algorithm(BLMA)for automatic recognition of hand-sign-spelled Bangla sign *** first phase,we have proposed two step classifiers for hand-sign classification using normalized outer boundary vector(NOBV)and window-grid vector(WGV)by calculating maximum inter correlation coefficient(ICC)between test feature vector and pre-trained feature *** first,the system classifies hand-signs using *** classification score does not satisfy specific threshold then another classifier based on WGV is *** system is trained using 5,200 images and tested using another(5,200×6)images of 52 hand-signs from 10 signers in 6 different challenging environments achieving mean accuracy of 95.83%for classification with the computational cost of 39.972 milliseconds per *** the Second Phase,we have proposed Bangla language modeling algorithm(BLMA)which discovers all"hidden characters"based on"recognized characters"from 52 hand-signs of BdSL to make any Bangla words,composite numerals and sentences in BdSL with no training,only based on the result of first *** the best of our knowledge,the proposed system is the first system in BdSL designed on automatic recognition of hand-sign-spelled BdSL for large *** system is tested for BLMA using hand-sign-spelled 500 words,100 composite numerals and 80 sentences in BdSL achieving mean accuracy of 93.50%,95.50%and 90.50%respectively.

关键词： Bangla sign language(BdSL) hand-sign classification Bangla language modeling rules(BLMR) Bangla language modeling algorithm(BLMA)

A real-time hand-signs segmentation and classification system using fuzzy rule based RGB model and grid-pattern analysis

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Frontiers of Computer Science 2018年第6期12卷 1258-1260页

作者： Muhammad Aminur RAHAMAN Mahmood JASIM md.Haider ALI Tao ZHANG md.hasanuzzaman Department of Computer Science and Engineering University of DhakaDhaka-1000Bangladesh Department of Automation School of Information Science &EngineeringTsinghua UniversityBeijing 100084China

Computer vision based researches of automatic hand-signs classification using simple camera based image are increasing rapidly in the present world. Hand-signs are the basic unit of the sign languages. So, successful ...

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Salt-Induced Changes in Physio-Biochemical and Antioxidant Defense System in Mustard Genotypes

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Phyton-International Journal of Experimental Botany 2020年第3期89卷 541-559页

作者： md.Shakhawat Hossain md.Daud Hossain Abdul Hannan Mirza hasanuzzaman md.Motiar Rohman Central Laboratory Research WingBangladesh Agricultural Research InstituteGazipur 1701Bangladesh Seed Technology Division Bangladesh Agricultural Research InstituteGazipur 1701Bangladesh Department of Agronomy Sher-e-Bangla Agricultural UniversityDhaka 1207Bangladesh Molecular Breeding Lab Plant Breeding DivisionBangladesh Agricultural Research InstituteGazipur 1701Bangladesh

Salinity stress is a major factor limiting plant growth and productivity of many crops including *** present study investigated the identification of salt tolerant mustard genotypes and better understanding the mechanism of salinity *** stresses significantly reduced relative water content(RWC),chlorophyll(Chl)content,K^(+) and K^(+)/Na^(+) ratio,photosynthetic rate(P N),tran-spiration rate(Tr),stomatal conductance(gs),intercellular CO_(2) concentration(Ci)and increased the levels of proline(Pro)and lipid peroxidation(md.)contents,Na+,superoxide(O_(2)^(•−))and hydrogen peroxide(H_(2)O_(2))in both tolerant and sensitive mustard *** tolerant genotypes maintained higher Pro and lower md. content than the salt sensitive genotypes under stress *** activities of superoxide dismutase(SOD),catalase(CAT),peroxidase(POD),glutathione peroxidase(GPX),monodehydroascorbate reductase(md.AR)and dehydroascorbate reductase(DHAR)were increased with increasing salinity in salt tolerant genotypes,BJ-1603,BARI Sarisha-11 and BARI Sarisha-16,but the activities were unchanged in salt sensitive genotype,BARI ***,the increment of ascorbate peroxidase(APX)activity was higher in salt sensitive genotype as compared to tolerant ***,the activ-ities of glutathione reductase(GR)and glutathione S-transferase(GST)were increased sharply at stress conditions in tolerant genotypes as compared to sensi-tive *** accumulation of Pro along with improved physiological and biochemical parameters as well as reduced oxidative damage by up-regulation of antioxidant defense system are the mechanisms of salt tolerance in selected mustard genotypes,BJ-1603 and BARI Sarisha-16.

关键词： Mustard saline sensitivity photosynthesis antioxidants ionic imbalance oxidative stress

Insight into 5-aminolevulinic acid-induced modulation of cellular antioxidant metabolism to confer salinity and drought tolerance in maize

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BIOCELL 2020年第4期44卷 713-730页

作者： md.ROBYUL ISLAM TAHIA NAZNIN DIPALI RANI GUPTA md.ASHRAFUL HAQUE MIRZA hasanuzzaman md.MOTIAR ROHMAN Institute of Biotechnology and Genetic Engineering(IBGE) Bangabandhu Sheikh Mujibur Rahman Agricultural UniversityGazipur1706Bangladesh Department of Genetics and Plant Breeding Bangabandhu Sheikh Mujibur Rahman Agricultural UniversityGazipur1706Bangladesh Department of Agronomy Faculty of AgricultureSher-e-Bangla Agricultural UniversitySher-e-Bangla NagarDhaka1207Bangladesh Molecular Breeding Laboratory Plant Breeding DivisionBangladesh Agricultural Research InstituteGazipur1701Bangladesh

The current study investigated the comparative oxidative damage in twomaize seedlings induced by saline,drought,and combined stress and the ameliorative role of two different doses(20 and 80μM)of 5-aminolevulinic acid(ALA)against the above-mentioned *** grown 10-day-old maize(Zea mays,*** Hybrid Maize-7(BHM-7)and BARI Hybrid Maize-9(BHM-9))seedlings were exposed to 12 dS/m of saline solution,200 mM mannitol-induced drought stress alone and their combined stress for 7 *** revealed that individual stresses retard the plant growth to some degrees,however,their combined stress has more detrimental effects,which might be correlated with lipid peroxidation(md.)-induced oxidative stress in seedlings,enhanced Na+/K+ratio,and augmented generation of superoxide(O_(2)•^(−))and hydrogen peroxide(H_(2)O_(2)).In contrast,exogenous ALA supplementation at 20μM concentration markedly recovered from chlorosis and growth inhibition,substantially scavenged reactive oxygen species(ROS)and md. by preserving ionhomeostasis and relaxing oxidative stress,also,by boosting catalase(CAT)and glutathione S-transferase(GST),and exclusively via depressing the activity of lipoxygenase(LOX)antioxidant *** the contrary,80μM ALA made things worse,nevertheless,higher activities shown by other antioxidant enzymes,like,superoxide dismutase(SOD),ascorbate peroxidase(APX),peroxidase(POD),and glutathione peroxidase(GPX),which were related to lessen the oxidative damage by highly produced O_(2)•^(−)and H_(2)O_(2) under combined ***-denaturing gel electrophoresis was done for further ***,ALA importantly increased the photosynthetic pigment contents in both genotypes irrespective of ***,GST might have assisted the plants to escape from the herbicidal effect by ***,in the combined stress condition,high ALA concentration may have some positive role to *** findings also showed that BHM-9 performed better than BHM

关键词： Maize Combined stress Salinity Drought 5-aminolevulinic acid Oxidative stress

Screening and Assessment of Selected Chilli (Capsicum annuum L.) Genotypes for Drought Tolerance at Seedling Stage

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Phyton-International Journal of Experimental Botany 2021年第5期90卷 1425-1443页

作者： md.Rezwan Molla md.Motiar Rohman Mahmuda Binte Monsur Mirza hasanuzzaman Lutful Hassan Plant Genetic Resources Centre Bangladesh Agricultural Research InstituteGazipur1701Bangladesh Molecular Breeding Laboratory Plant Breeding DivisionBangladesh Agricultural Research InstituteGazipur1701Bangladesh Department of Agronomy Faculty of AgricultureSher-e-Bangla Agricultural UniversityDhaka1207Bangladesh Department of Genetics and Plant Breeding Bangladesh Agricultural UniversityMymensingh2202Bangladesh

This study was undertaken to investigate oxidative stress tolerant mechanisms in chilli(Capsicum annuum L.)under drought genotypes through evaluating morphological,physiological,biochemical and stomatal *** genotypes were evaluated for their genetic potential to drought stress tolerant at seedling *** days old seedlings were exposed to drought stress induced by stop watering for the following 10 days and rewatering for the following one week as *** on their survival performance,two tolerant genotypes ***-10906 and BD-109012 and two susceptible genotypes ***-10902 and RT-20 were selected for studying the oxidative stress tolerance *** reduced root and shoot length,dry weight,ratio,petiole weight and leaf area in both tolerant and susceptible genotypes,and a higher reduction was observed in susceptible *** reduction of leaf area and photosynthetic pigments were also found in tolerant ***,tolerant genotypes showed higher recovery than susceptible genotypes after the removal of stress.A higher reduction of relative water content(RWC)may cause an imbalance between absorbed and transpirated water in susceptible *** accumulation of proline in tolerant genotypes might be helpful to for better osmotic maintenance than that in susceptible *** genotypes showed higher antioxidant activity as they showed DPPH radical scavenging percentage than the susceptible ***,closer stomata in tolerant genotypes than susceptible ones helped to avoid dehydration in tolerant ***,the above morphological,physiological,biochemical and stomatal parameters helped to show better tolerance in chilli under drought stress.

关键词： Chilli drought stress tolerance morphology physiology biochemical altern

Organic Amendments Improve Plant Morpho-Physiology and Antioxidant Metabolism in Mitigating Drought Stress in Bread Wheat(Triticum aestivum L.)

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Phyton-International Journal of Experimental Botany 2022年第9期91卷 1959-1972页

作者： Taufika Islam Anee md.Nur Nabi Islam Mohamed M.Hassan Abdul Awal Chowdhury Masud md.Mahabub Alam Mirza hasanuzzaman Department of Agronomy Faculty of AgricultureSher-e-Bangla Agricultural UniversityDhaka1207Bangladesh Department of Biology College of ScienceTaif UniversityTaif21944Saudi Arabia

Due to the unpredictable climate change,drought stress is being considered as one of the major threats to crop ***(Triticum aestivum *** Gom-26)being a dry season crop frequently faces scarcity of water and results in a lower ***,this experiment aims to explore the role of different organic amendments(OAs)in mitigating drought stress-induced *** pot experiment consisted of different organic amendments ***,vermicompost and poultry manure@0.09 kg m^(−2)soil,biochar@2.5%w/w soil and chitosan@1%w/w soil which was imposed on the plants grown under both well-watered and drought *** showed that drought stress reduced plant height(15%),SPAD value(16%),relative water content(13%),number of spikelet spike^(−1)(17%),number of grains spike^(−1)(12%),and 100-grain weight(18%).Organic amendments act as a protectant and reduce drought stress-induced damages by enhancing the morpho-physiological and yield *** enhanced SPAD value by 18%,number of spikelets spike^(−1)by 20%,number of grains spike^(−1)by 17%,whereas poultry manure increased plant height by 16%under drought condition compared to control *** other OAs applied,vermicompost was proved to be capable of reducing the higher lipid peroxidation and proline content raised by drought *** stress-induced increment of catalase,ascorbate peroxidase and glutathione reductase activities were also efficiently modulated by the organic amendment *** present study concluded that OAs play significant roles in alleviating drought stressinduced damages by improving the morpho-physiological attributes and among the different types of OAs used vermicompost performed better which in addition ceased the production of reactive oxygen species.

关键词： Antioxidant defense biochar cereal crop chitosan compost poultry manure reactive oxygen species vermicompost

Nutrient dynamics in the Sundarbans mangrove estuarine system of Bangladesh under different weather and tidal cycles

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Ecological Processes 2013年第1期2卷 300-312页

作者： Shak md.Bazlur Rahaman Lipton Sarder md.Sayadur Rahaman Alokesh Kumar Ghosh Sudhin Kumar Biswas SM Shahjahan Siraj Khandaker Anisul Huq Abul Farah md.hasanuzzaman Shikder Saiful Islam Fisheries and Marine Resource Technology Discipline Khulna UniversityKhulna 9208Bangladesh Chemistry Department Comilla UniversityComilla 3500Bangladesh

Introduction:Seasonal and tidal variations in nutrient concentration and water quality were investigated in the western Sundarbans of Bangladesh during the post-monsoon,winter and monsoon seasons during 2010–***:Water collected from the surface,middle and bottom layers at six locations of the Kholpetua-Arpangashia river system during high and low tides was analyzed for temperature,salinity,pH,dissolved oxygen(DO),total dissolved solids(TDS),electrical conductivity(EC)and dissolved nutrients(NO3–N,PO4–P,SO4 and NH3–N).Results:The study revealed that nutrient concentrations were influenced by seasonal *** nutrient levels during post-monsoon,winter and monsoon seasons,respectively,were in the following ranges:nitrate(0.06–0.40,0.06–0.46 and 0.08–0.46 mg/L);phosphate(0.09–0.18,0.05–0.42 and 0.10–0.16 mg/L);sulphate(58.71–86.14,68.68–119.01 and 78.15–136.47 mg/L)and ammonia(0.02–0.08,0.02–0.04 and 0.26–0.38 mg/L).Increased levels of PO4–P,SO4 and NH3–N and lower DO and salinity were recorded during the monsoon *** of the experimental sites showed higher NO3–N content during monsoon,whereas few elevated concentrations were observed during post-monsoon and winter *** and low tidal waters contained mean nutrient levels in the following ranges:nitrate(0.05–0.46 and 0.04–0.40 mg/L);phosphate(0.05–0.42 and 0.07–0.18 mg/L);sulphate(63.63–125.36 and 58.71–136.47 mg/L)and ammonia(0.02–0.38 and 0.02–0.37 mg/L)without following any distinct fluctuation *** western part of the Sundarbans receives less freshwater input during the monsoon season than other areas of the ecosystem,which reduces the variability of nutrient levels and water quality ***:This study provides considerable advances in understanding the seasonality of nutrient distribution with possible tidal *** data generated from this study will guide continuing efforts to support a sound management for coastal mangrove ecosystems.

关键词： Sundarbans Monsoon Post-monsoon Nitrate Phosphate Sulphate Ammonia Aquatic ecosystem Water quality River