Pub Date : 2020-12-29DOI: 10.24203/ajafs.v8i6.5254
S. Abdelwahab
ABSTRACT---Glucoamylase is widely used in the food industry to produce high glucose syrup, and also in fermentation processes for production of beer and ethanol. In this work glucoamylase enzyme produced by six fungal strains were previously isolated from different Sudanese soils, crop seeds, rotten fruits and pieces of moistened bread designated as Aspergillus awamori (A1and A7), A. niger (A10) , A. tamari (Aw), A. terrus (At) and Rhizous oryzae (R3) in a liquid culture was evaluated and characterized. The maximum temperature of glucoamylase activity are found to be in the range of 60-70C and at pH value of 5.0-6.0 and the activity of all enzymes from all isolates increased with increase of the concentration of soluble starch. Also the activity of the enzyme from all isolates under study increase with increase of time reaction.
{"title":"Partial Characterization of Glucoamylase Crude Enzyme Produced by Aspergillus and Rhizopus Strains","authors":"S. Abdelwahab","doi":"10.24203/ajafs.v8i6.5254","DOIUrl":"https://doi.org/10.24203/ajafs.v8i6.5254","url":null,"abstract":"ABSTRACT---Glucoamylase is widely used in the food industry to produce high glucose syrup, and also in fermentation processes for production of beer and ethanol. In this work glucoamylase enzyme produced by six fungal strains were previously isolated from different Sudanese soils, crop seeds, rotten fruits and pieces of moistened bread designated as Aspergillus awamori (A1and A7), A. niger (A10) , A. tamari (Aw), A. terrus (At) and Rhizous oryzae (R3) in a liquid culture was evaluated and characterized. The maximum temperature of glucoamylase activity are found to be in the range of 60-70C and at pH value of 5.0-6.0 and the activity of all enzymes from all isolates increased with increase of the concentration of soluble starch. Also the activity of the enzyme from all isolates under study increase with increase of time reaction.","PeriodicalId":92332,"journal":{"name":"Asian journal of agriculture and food science","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45333601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-11-11DOI: 10.24203/ajafs.v8i5.6375
Gemaima Evangelista, A. Felix
The physical and proximate characteristics of three commercial varieties of shrunken 2 sweet corn as affected by harvest maturities (18, 20 and 22 days after 100% silking) were evaluated. As sweet corn, there was a significant increase in length in SC1 and SC2. On the other hand all varieties ear diameter increased with maturity. The three varieties have significant differences in ear length and diameter. Lightness of kernels was not affected by maturity and varietal differences. Increasing a* and b* values suggested that the kernels became more red and yellow as they mature on the plant due to carotenogenesis. The a* and b* values of SC1 and SC2 were significantly affected by maturity while SC3 was not. In terms of chroma, only SC2 was significantly affected by harvest maturity, with an increased in color vividness as it matured in the plant. While hue values of the three varieties were not affected by harvest maturity. SC1 and SC2 kernel percentage moisture decreased significantly as sweet corn matures in the plant. Percentage ash content was not significantly affected by harvest maturity. On the other harvest maturity affected SC1 and SC2 percentage protein, but not their fiber content. The percentage fat and nitrogen free extract of SC1 kernel decreased as the plant matures. Mean energy content was significantly different with harvest maturity in all three varieties at a P value < 0.01 (SC1 and SC2) and P = 0.05 (SC3). Harvest maturity affected the physical and proximate composition of the three commercial varieties of shrunken 2 sweet corn in the Philippines.
研究了3个商品化瘪2型甜玉米品种的物理性状和近似性状受采收期(100%吐丝后18、20和22天)的影响。作为甜玉米，SC1和SC2的长度显著增加。另一方面，各品种穗径均随成熟期增大。三个品种的穗长和穗径差异显著。籽粒轻度不受成熟度和品种差异的影响。增加a*和b*值表明，由于胡萝卜素的发生，籽粒在植物上成熟时变得更加红色和黄色。SC1和SC2的a*和b*值受成熟度影响显著，而SC3不受影响。在色度方面，只有SC2受到收获成熟度的显著影响，随着其在植株中的成熟，颜色的鲜度增加。而三个品种的色相值不受收获成熟度的影响。随着甜玉米的成熟，SC1和SC2籽粒含水率显著降低。果实成熟度对果实灰分含量影响不显著。另一方面，成熟度对籽粒SC1和SC2蛋白质含量有影响，但对其纤维含量没有影响。随着植株的成熟，SC1籽粒的脂肪含量和无氮浸出物含量呈下降趋势。3个品种的平均能含量随采收期的变化差异极显著(P < 0.01 (SC1和SC2)， P = 0.05 (SC3))。收获成熟度影响了菲律宾三个商业品种的萎缩甜玉米的物理和近似组成。
{"title":"Physical Characteristics and Proximate Composition of Three Commercial Shrunken 2 Varieties of Sweet Corn in the Philippines as Influenced by Harvest Maturity","authors":"Gemaima Evangelista, A. Felix","doi":"10.24203/ajafs.v8i5.6375","DOIUrl":"https://doi.org/10.24203/ajafs.v8i5.6375","url":null,"abstract":"The physical and proximate characteristics of three commercial varieties of shrunken 2 sweet corn as affected by harvest maturities (18, 20 and 22 days after 100% silking) were evaluated. As sweet corn, there was a significant increase in length in SC1 and SC2. On the other hand all varieties ear diameter increased with maturity. The three varieties have significant differences in ear length and diameter. Lightness of kernels was not affected by maturity and varietal differences. Increasing a* and b* values suggested that the kernels became more red and yellow as they mature on the plant due to carotenogenesis. The a* and b* values of SC1 and SC2 were significantly affected by maturity while SC3 was not. In terms of chroma, only SC2 was significantly affected by harvest maturity, with an increased in color vividness as it matured in the plant. While hue values of the three varieties were not affected by harvest maturity. SC1 and SC2 kernel percentage moisture decreased significantly as sweet corn matures in the plant. Percentage ash content was not significantly affected by harvest maturity. On the other harvest maturity affected SC1 and SC2 percentage protein, but not their fiber content. The percentage fat and nitrogen free extract of SC1 kernel decreased as the plant matures. Mean energy content was significantly different with harvest maturity in all three varieties at a P value < 0.01 (SC1 and SC2) and P = 0.05 (SC3). Harvest maturity affected the physical and proximate composition of the three commercial varieties of shrunken 2 sweet corn in the Philippines.","PeriodicalId":92332,"journal":{"name":"Asian journal of agriculture and food science","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45675332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-10-24DOI: 10.24203/ajafs.v8i5.6345
Sujata Adhana, Rajnish Kumar, Shvetambri Arora, U. Chaudhry
--Fresh produce available in an area is the major source of phytonutrients for healthy life. Decrease in the concentration of phytonutrients is directly linked to a range of health issues in terms of increase in the rate of infections. This study conducted on fresh produce available in Delhi and National Capital Region (NCR) on microbiological and nutritional analysis showed a significant increase in microbial load in fruits as they stay over the period of a week to fortnight at room temperature. A total of seven different types of fresh produce were procured for analysis. Out of them, lemon showed the lowest microbial count and sugar content and grapes showed highest microbial count and sugar content. Results were also compared with refrigerated and room temperature stored fruits. It was concluded that fresh fruits have more nutritive value than stored fruits (room and refrigerated). In this study, glucose content was determined by Fehling's titration and Ascorbic Acid by Dichlorophenolindophenol method. The microbial biota was assessed by serial dilution method for determining microbial load of different types of bacteria. Some of the fruits showed decrease in the nutritive value and correspondingly increase in the load of antibiotic resistant microbes during storage rendering them unfit for human consumption. Keywords---Fresh Produce, Ascorbic acid, Microbial count, Nutrition. _________________________________________________________________________________________________ ABBREVIATIONS: NCR: National Capital Region, APHA: American Public Health Association, FDA: Food and Drug Association, FAO: Food and Agriculture Organization, CFU: Colony Forming Unit, DCPIP: Dichlorophenolindophenol, DF: Dilution Factor, PCA: Plate Count Agar
{"title":"Nutritional and Microbiota Analysis of Fresh Produce in Delhi and National Capital Region","authors":"Sujata Adhana, Rajnish Kumar, Shvetambri Arora, U. Chaudhry","doi":"10.24203/ajafs.v8i5.6345","DOIUrl":"https://doi.org/10.24203/ajafs.v8i5.6345","url":null,"abstract":"--Fresh produce available in an area is the major source of phytonutrients for healthy life. Decrease in the concentration of phytonutrients is directly linked to a range of health issues in terms of increase in the rate of infections. This study conducted on fresh produce available in Delhi and National Capital Region (NCR) on microbiological and nutritional analysis showed a significant increase in microbial load in fruits as they stay over the period of a week to fortnight at room temperature. A total of seven different types of fresh produce were procured for analysis. Out of them, lemon showed the lowest microbial count and sugar content and grapes showed highest microbial count and sugar content. Results were also compared with refrigerated and room temperature stored fruits. It was concluded that fresh fruits have more nutritive value than stored fruits (room and refrigerated). In this study, glucose content was determined by Fehling's titration and Ascorbic Acid by Dichlorophenolindophenol method. The microbial biota was assessed by serial dilution method for determining microbial load of different types of bacteria. Some of the fruits showed decrease in the nutritive value and correspondingly increase in the load of antibiotic resistant microbes during storage rendering them unfit for human consumption. Keywords---Fresh Produce, Ascorbic acid, Microbial count, Nutrition. _________________________________________________________________________________________________ ABBREVIATIONS: NCR: National Capital Region, APHA: American Public Health Association, FDA: Food and Drug Association, FAO: Food and Agriculture Organization, CFU: Colony Forming Unit, DCPIP: Dichlorophenolindophenol, DF: Dilution Factor, PCA: Plate Count Agar","PeriodicalId":92332,"journal":{"name":"Asian journal of agriculture and food science","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43624711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-10-24DOI: 10.24203/ajafs.v8i5.6295
I. M. Gana, A. Gbabo, I. S. Egbe-Okpenge
I Cassava harvesting is viewed as the most arduous operation in its production chain, involving three main sequential operations from stem cutting, soil loosening and then uprooting of the tubers. A semi-mechanised cassava stem cutter and harvester was developed to aid mitigate the drudgery involved in cassava harvesting. The machine was designed to carry out three main operations which include stem cutting, soil loosening and tuber harvesting. A precise knowledge of agronomic, physical and mechanical properties of the stem and factors affecting cassava harvesting most especially stem cutting plays a vital role in an attempt to overcome the existing challenges associated with the harvesting. The effects of stem girth, region of cut, cutting attempts and stem moisture content on cutting efficiency was investigated. The result of the experiment revealed that the cutting efficiency ranged from 3 to 99.5%. The highest cutting efficiency of 99.5% was obtained from combination of stem moisture content of 85%, length of lever arm from fulcrum of 65 cm, region of cut above ground level of 30 cm and number of cutting attempts 3. The lowest cutting efficiency of 3% was obtained from combination of stem moisture content of 45%, length of lever arm from fulcrum of 65 cm, region of cut above ground level of 30 cm and number of cutting attempts 3. The optimization process produced solutions whose desirability equals to 1 and the selected (most desirable) condition was found to be: stem moisture content (75%), length of lever arm from fulcrum (70 cm), region of cut above ground level (40 cm) and cutting attempts (4), with cutting efficiency and desirability of 99.5% and 0.959 respectively. These findings are vital knowledge necessary in the development of cassava stem cutting and harvesting equipment. Keywords— A Cassava harvester, cutter, efficiency, moisture, region of cut, stem _________________________________________________________________________________
{"title":"Effects of Stem Moisture Content, Length of Lever Arm, Region of Cut and Cutting Attempts on the Cutting Efficiency of a Push-Type Cassava Stem Cutter and Harvester","authors":"I. M. Gana, A. Gbabo, I. S. Egbe-Okpenge","doi":"10.24203/ajafs.v8i5.6295","DOIUrl":"https://doi.org/10.24203/ajafs.v8i5.6295","url":null,"abstract":"I Cassava harvesting is viewed as the most arduous operation in its production chain, involving three main sequential operations from stem cutting, soil loosening and then uprooting of the tubers. A semi-mechanised cassava stem cutter and harvester was developed to aid mitigate the drudgery involved in cassava harvesting. The machine was designed to carry out three main operations which include stem cutting, soil loosening and tuber harvesting. A precise knowledge of agronomic, physical and mechanical properties of the stem and factors affecting cassava harvesting most especially stem cutting plays a vital role in an attempt to overcome the existing challenges associated with the harvesting. The effects of stem girth, region of cut, cutting attempts and stem moisture content on cutting efficiency was investigated. The result of the experiment revealed that the cutting efficiency ranged from 3 to 99.5%. The highest cutting efficiency of 99.5% was obtained from combination of stem moisture content of 85%, length of lever arm from fulcrum of 65 cm, region of cut above ground level of 30 cm and number of cutting attempts 3. The lowest cutting efficiency of 3% was obtained from combination of stem moisture content of 45%, length of lever arm from fulcrum of 65 cm, region of cut above ground level of 30 cm and number of cutting attempts 3. The optimization process produced solutions whose desirability equals to 1 and the selected (most desirable) condition was found to be: stem moisture content (75%), length of lever arm from fulcrum (70 cm), region of cut above ground level (40 cm) and cutting attempts (4), with cutting efficiency and desirability of 99.5% and 0.959 respectively. These findings are vital knowledge necessary in the development of cassava stem cutting and harvesting equipment. Keywords— A Cassava harvester, cutter, efficiency, moisture, region of cut, stem _________________________________________________________________________________","PeriodicalId":92332,"journal":{"name":"Asian journal of agriculture and food science","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43020251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-08-28DOI: 10.24203/ajafs.v8i4.6145
Manhel M. Abd Ellateef, E. M. Shaheen
--A pot experiment was carried out to study the effect of magnetized water on some growth characters of broad bean (Vicia faba L.). The experiment was arranged in completely randomized design (CRD) with four different treatments of magnetized water and tap water as a control. Results indicated a significant increase in plant height, number of leaves, leaf area, fruit length, weight of 100 seeds. The results also showed a significant increase in some elements (K, Ca and Mg). The shoot and root fresh and dry weight and chlorophyll content expressed a significant increase compared to control. Keywords---Broad bean, Chemical constituents, Germination, Magnetized water _________________________________________________________________________________________________ Asian Journal of Agriculture and Food Sciences (ISSN: 2321 – 1571) Volume 8 – Issue 4, August 2020 99 ) www.ajouronline.com Asian Online Journals (
{"title":"Effect of Magnetized Water on Germination and Some Growth Characters of Broad Bean (Vicia Faba L.)","authors":"Manhel M. Abd Ellateef, E. M. Shaheen","doi":"10.24203/ajafs.v8i4.6145","DOIUrl":"https://doi.org/10.24203/ajafs.v8i4.6145","url":null,"abstract":"--A pot experiment was carried out to study the effect of magnetized water on some growth characters of broad bean (Vicia faba L.). The experiment was arranged in completely randomized design (CRD) with four different treatments of magnetized water and tap water as a control. Results indicated a significant increase in plant height, number of leaves, leaf area, fruit length, weight of 100 seeds. The results also showed a significant increase in some elements (K, Ca and Mg). The shoot and root fresh and dry weight and chlorophyll content expressed a significant increase compared to control. Keywords---Broad bean, Chemical constituents, Germination, Magnetized water _________________________________________________________________________________________________ Asian Journal of Agriculture and Food Sciences (ISSN: 2321 – 1571) Volume 8 – Issue 4, August 2020 99 ) www.ajouronline.com Asian Online Journals (","PeriodicalId":92332,"journal":{"name":"Asian journal of agriculture and food science","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42105282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-08-28DOI: 10.24203/ajafs.v8i4.6286
A. Gbabo, C. Muogbo, I. M. Gana
Planting of turmeric has been a challenge to the farmers in Nigeria due to the absence of planting machine. The farmers are left to the traditional method of planting with hoes and cutlasses. This method is time consuming, labour intensive, associated with human drudgery and a high demand for human energy. As a result, a mechanical planter was designed and fabricated. The main objective of the study is to develop and evaluate the performance of a tractordrawn turmeric planter. The planter was designed, fabricated and tested in the Agricultural and Bioresources Department of The Federal University of Technology, Minna. It consists of a ground drive wheel, hopper, metering system furrow opener, residue cutting edge, furrow closing device press wheel and power transmission mechanism. The performance tests of the fabricated machine were carried out using three levels of turmeric rhizome lengths (30 mm, 45 mm and 60 mm) at three levels of operational speeds (8km/h 10km/h and 12km/h). The results revealed that there was no steady pattern in the increase or decrease of miss index with increase in turmeric rhizome length and machine operational speed. The highest percentage turmeric rhizome miss index of 35% was recorded for turmeric rhizome length of 30cm at machine operational speed of 10km/h whereas the lowest percentage turmeric rhizome miss index of 15% was obtained for turmeric rhizome length of 60cm at the machine operational speed of 12km/h. The machine operational speed and size of the turmeric rhizomes affect the field capacity of the machine. The highest capacity of 0.96ha/h was recorded at the highest operational speed of 12km/h. The lowest field capacity of 0.63ha/h was recorded at the lowest machine speed of 8km/h. The developed machine could reduce drudgery involved in manual turmeric planting and save about substantial amount of labour and operating time. Keywords— Development, testing, tractor-drawn turmeric, planter _________________________________________________________________________________
{"title":"Development of a Tractor Drawn Turmeric Planter","authors":"A. Gbabo, C. Muogbo, I. M. Gana","doi":"10.24203/ajafs.v8i4.6286","DOIUrl":"https://doi.org/10.24203/ajafs.v8i4.6286","url":null,"abstract":"Planting of turmeric has been a challenge to the farmers in Nigeria due to the absence of planting machine. The farmers are left to the traditional method of planting with hoes and cutlasses. This method is time consuming, labour intensive, associated with human drudgery and a high demand for human energy. As a result, a mechanical planter was designed and fabricated. The main objective of the study is to develop and evaluate the performance of a tractordrawn turmeric planter. The planter was designed, fabricated and tested in the Agricultural and Bioresources Department of The Federal University of Technology, Minna. It consists of a ground drive wheel, hopper, metering system furrow opener, residue cutting edge, furrow closing device press wheel and power transmission mechanism. The performance tests of the fabricated machine were carried out using three levels of turmeric rhizome lengths (30 mm, 45 mm and 60 mm) at three levels of operational speeds (8km/h 10km/h and 12km/h). The results revealed that there was no steady pattern in the increase or decrease of miss index with increase in turmeric rhizome length and machine operational speed. The highest percentage turmeric rhizome miss index of 35% was recorded for turmeric rhizome length of 30cm at machine operational speed of 10km/h whereas the lowest percentage turmeric rhizome miss index of 15% was obtained for turmeric rhizome length of 60cm at the machine operational speed of 12km/h. The machine operational speed and size of the turmeric rhizomes affect the field capacity of the machine. The highest capacity of 0.96ha/h was recorded at the highest operational speed of 12km/h. The lowest field capacity of 0.63ha/h was recorded at the lowest machine speed of 8km/h. The developed machine could reduce drudgery involved in manual turmeric planting and save about substantial amount of labour and operating time. Keywords— Development, testing, tractor-drawn turmeric, planter _________________________________________________________________________________","PeriodicalId":92332,"journal":{"name":"Asian journal of agriculture and food science","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45259738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-08-28DOI: 10.24203/ajafs.v8i4.6289
J. F. Reyes, J. Bruijn, G. Tolosa, P. Aqueveque, Christian Correa
— The consumption of sprouts in the human diet has grown during the last years, but great concern raised from public health institutions, food industry and consumers regarding their safety since foodborne diseases caused by microorganisms have been reported. Copper metal as a contact surface was studied during the germination of alfalfa seeds (Medicago sativa L.) inside a rotating drum on a laboratory scale and compared with a plastic surface of food-grade. A system of three rotating drums was used inside a thermo-regulated chamber to germinate seeds. To evaluate the antibacterial activity of copper sheets, alfalfa seeds were inoculated with 4.2 log cfu g-1 of Escherichia coli and after 84 hours of germination sprouts were evaluated for E. coli, mesophilic aerobic bacteria, the content of copper and other minerals (potassium, calcium, magnesium, sodium, iron, manganese, and zinc), total mass, unit mass and length, and color. The contact of alfalfa sprouts with copper sheets allowed to reduce the E. coli load from 6.54 to <0.1 log cfu g-1. However, all sprouts exceeded in copper (> 10 ppm) according to Food Sanitary Regulations. Germinated mass and length decreased after copper treatments. No statistically significant differences were observed between treatments for the remaining quality parameters. Finally, it is concluded that copper was very efficient in reducing the microbial load of E. coli in alfalfa sprouts, complying with the regulations established by the Chilean Ministry of Health.
{"title":"The Evaluation of Antibacterial Activity of Copper Sheets in the Germination of Alfalfa Seeds (Medicago sativa L.) within a Rotating Drum","authors":"J. F. Reyes, J. Bruijn, G. Tolosa, P. Aqueveque, Christian Correa","doi":"10.24203/ajafs.v8i4.6289","DOIUrl":"https://doi.org/10.24203/ajafs.v8i4.6289","url":null,"abstract":"— The consumption of sprouts in the human diet has grown during the last years, but great concern raised from public health institutions, food industry and consumers regarding their safety since foodborne diseases caused by microorganisms have been reported. Copper metal as a contact surface was studied during the germination of alfalfa seeds (Medicago sativa L.) inside a rotating drum on a laboratory scale and compared with a plastic surface of food-grade. A system of three rotating drums was used inside a thermo-regulated chamber to germinate seeds. To evaluate the antibacterial activity of copper sheets, alfalfa seeds were inoculated with 4.2 log cfu g-1 of Escherichia coli and after 84 hours of germination sprouts were evaluated for E. coli, mesophilic aerobic bacteria, the content of copper and other minerals (potassium, calcium, magnesium, sodium, iron, manganese, and zinc), total mass, unit mass and length, and color. The contact of alfalfa sprouts with copper sheets allowed to reduce the E. coli load from 6.54 to <0.1 log cfu g-1. However, all sprouts exceeded in copper (> 10 ppm) according to Food Sanitary Regulations. Germinated mass and length decreased after copper treatments. No statistically significant differences were observed between treatments for the remaining quality parameters. Finally, it is concluded that copper was very efficient in reducing the microbial load of E. coli in alfalfa sprouts, complying with the regulations established by the Chilean Ministry of Health.","PeriodicalId":92332,"journal":{"name":"Asian journal of agriculture and food science","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48345249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-08-28DOI: 10.24203/ajafs.v8i4.6262
David Muriithi, B. Wambua, K. J. Omoke
Characterization of small scale farmers’ low levels of adoption to crop insurance as an adaptation strategy to climate variability
小农采用作物保险作为气候变率适应策略的低水平特征
{"title":"Characterization of Small Scale Farmers’ Low Levels of Adoption to Crop Insurance as an Adaptation Strategy to Climate Variability in Nyandarua County of Kenya","authors":"David Muriithi, B. Wambua, K. J. Omoke","doi":"10.24203/ajafs.v8i4.6262","DOIUrl":"https://doi.org/10.24203/ajafs.v8i4.6262","url":null,"abstract":"Characterization of small scale farmers’ low levels of adoption to crop insurance as an adaptation strategy to climate variability","PeriodicalId":92332,"journal":{"name":"Asian journal of agriculture and food science","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48335014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-08-28DOI: 10.24203/ajafs.v8i4.6268
B. Rotawewa, E. Lokupitiya
The availability of low cost and long-lasting water pumping technology is a dream of every farmer. In Sri Lanka, fuel or electricity-powered water pumps are used to irrigate thousands of hectares of field crops, Vegetables, and fruits. Based on the International Water Management Institute (IWMI) survey conducted in the year 2000, there are about 50,000 agro-wells in the dry zone of Sri Lanka. More than 110,000 pumps are used to pump water from those wells. The fuel cost is the biggest burden for the farmers, which results in a high cost of production. The use of solar energy for water pumping is a promising alternative to conventional electricity and fuel-based water pumping systems. Solar-powered water pumping is based on photovoltaic (PV) technology that converts solar energy into electrical energy to run a DC or AC type water pump. This paper presents a comparative analysis of economic and environmental benefits associated with solar water pumping systems against fuel-based water pumping systems. The analyses were based on practical experience over 50 acres of land cultivated for export-oriented Green Cucumber by 100 members of Tempitiya Farmer Organization in Ampara District of Sri Lanka. It concluded that the solar water pumping system is advantageous compared to a fuel-based pump in terms of economic and environmental aspects. Keywords—solar energy; economic and environmental feasibility _________________________________________________________________________________
{"title":"Climate-Smart Initiatives in Sri Lankan Agriculture Sector: Experience and Perspectives in Solar Powered Water Pumping for Sustainable Crop Production","authors":"B. Rotawewa, E. Lokupitiya","doi":"10.24203/ajafs.v8i4.6268","DOIUrl":"https://doi.org/10.24203/ajafs.v8i4.6268","url":null,"abstract":"The availability of low cost and long-lasting water pumping technology is a dream of every farmer. In Sri Lanka, fuel or electricity-powered water pumps are used to irrigate thousands of hectares of field crops, Vegetables, and fruits. Based on the International Water Management Institute (IWMI) survey conducted in the year 2000, there are about 50,000 agro-wells in the dry zone of Sri Lanka. More than 110,000 pumps are used to pump water from those wells. The fuel cost is the biggest burden for the farmers, which results in a high cost of production. The use of solar energy for water pumping is a promising alternative to conventional electricity and fuel-based water pumping systems. Solar-powered water pumping is based on photovoltaic (PV) technology that converts solar energy into electrical energy to run a DC or AC type water pump. This paper presents a comparative analysis of economic and environmental benefits associated with solar water pumping systems against fuel-based water pumping systems. The analyses were based on practical experience over 50 acres of land cultivated for export-oriented Green Cucumber by 100 members of Tempitiya Farmer Organization in Ampara District of Sri Lanka. It concluded that the solar water pumping system is advantageous compared to a fuel-based pump in terms of economic and environmental aspects. Keywords—solar energy; economic and environmental feasibility _________________________________________________________________________________","PeriodicalId":92332,"journal":{"name":"Asian journal of agriculture and food science","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45485464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-06-30DOI: 10.24203/ajafs.v8i3.6188
Gnande Romaric Die, K. O. Chatigre, I. Fofana, N. V. Abouo, G. Biego
Maize (Zea mays) is a staple food in the traditional diet of rural populations in Côte d'Ivoire. It is a source of many minerals. However, inefficient and sometimes harmful storage methods hamper its large-scale production in Côte d'Ivoire. It is in this context that a triple bagging system associated or not with biopesticides of plant origin (Lippia multiflora and Hyptis suaveolens leaves) was proposed in this study to evaluate its efficacy on the conservation of mineral quality of grains over an 18-month period following a 3-factor central composite design (CCD). The first CCD factor consisted of 6 observation periods: 0; 1; 4.5; 9.5; 14.5 and 18 months. The second factor, the type of treatment, included 1 control lot with a polypropylene bag (TB0SP) and 9 experimental lots including 1 lot in triple bagging without biopesticides (TB0P) and the remaining 8 lots containing variable proportions and/or combinations of biopesticides (TB1 to TB8). And finally, the third factor was the combination of the two biopesticides with % Lippia multiflora as a reference. The results indicate that the shelf life, ratio and combination of biopesticides significantly (P < 0.05) influence the mineral quality of grain maize. Principal component analysis revealed that the addition of at least 1.01% biopesticides (leaves of Lippia multiflora and Hyptis suaveolens) in triple bagging systems improves preservation efficiency and preserves the mineral quality of the grain over a period of 15 months as opposed to triple bagging without biopesticides where the mineral elements are preserved during the first 10 months of storage. However, this preservation of mineral quality is more pronounced in these storage systems with combinations of biopesticides (of which the proportion is greater than or equal to 3.99%) or with 2.5 % of individual biopesticides. Keywords— Maize conservation, mineral quality, triple bagging, biopesticides, Côte d'Ivoire. _________________________________________________________________________________
{"title":"Conservation of Mineral Elements in Maize Grains by a Triple Bagging System and Biopesticide (Lippia multiflora Moldenke and Hyptis suaveolens Poit Leaves).","authors":"Gnande Romaric Die, K. O. Chatigre, I. Fofana, N. V. Abouo, G. Biego","doi":"10.24203/ajafs.v8i3.6188","DOIUrl":"https://doi.org/10.24203/ajafs.v8i3.6188","url":null,"abstract":"Maize (Zea mays) is a staple food in the traditional diet of rural populations in Côte d'Ivoire. It is a source of many minerals. However, inefficient and sometimes harmful storage methods hamper its large-scale production in Côte d'Ivoire. It is in this context that a triple bagging system associated or not with biopesticides of plant origin (Lippia multiflora and Hyptis suaveolens leaves) was proposed in this study to evaluate its efficacy on the conservation of mineral quality of grains over an 18-month period following a 3-factor central composite design (CCD). The first CCD factor consisted of 6 observation periods: 0; 1; 4.5; 9.5; 14.5 and 18 months. The second factor, the type of treatment, included 1 control lot with a polypropylene bag (TB0SP) and 9 experimental lots including 1 lot in triple bagging without biopesticides (TB0P) and the remaining 8 lots containing variable proportions and/or combinations of biopesticides (TB1 to TB8). And finally, the third factor was the combination of the two biopesticides with % Lippia multiflora as a reference. The results indicate that the shelf life, ratio and combination of biopesticides significantly (P < 0.05) influence the mineral quality of grain maize. Principal component analysis revealed that the addition of at least 1.01% biopesticides (leaves of Lippia multiflora and Hyptis suaveolens) in triple bagging systems improves preservation efficiency and preserves the mineral quality of the grain over a period of 15 months as opposed to triple bagging without biopesticides where the mineral elements are preserved during the first 10 months of storage. However, this preservation of mineral quality is more pronounced in these storage systems with combinations of biopesticides (of which the proportion is greater than or equal to 3.99%) or with 2.5 % of individual biopesticides. Keywords— Maize conservation, mineral quality, triple bagging, biopesticides, Côte d'Ivoire. _________________________________________________________________________________","PeriodicalId":92332,"journal":{"name":"Asian journal of agriculture and food science","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48498121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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