Pub Date : 2016-01-26DOI: 10.22034/JCHR.2018.544123
Mehrdad Babarabie, H. Zarei, F. Varasteh
In this study, the concentrations of 25, 375 and 500 ml L -1 of Cola+ 2000 mg L -1 of peppermint essence and concentrations of 30, 45 and 60 ml L -1 of apple extract +2000 mg L -1 rosemary essence on Alstroemeria cut flowers (Cv. balance) were investigated to verify the use of natural ingredients in flowers preservative solutions. This experiment was conducted in the laboratory of Gorgan University of Agricultural Sciences and Natural Resources, in 2014. Results showed that the interaction of cola with peppermint essence and apple extract with rosemary essence at above concentrations increase the vase life of flower, flower diameter and anthocyanin at significantly level of %1. The highest amount of vase life was related to concentration of 500 ml L -1 of cola (15 days), while vase life in control treatment (distilled water) was 9 days. The highest flower diameter was recorded in apple extract (45 ml L -1 ) + Rosemary essence (2000 mg L -1 ). The highest amount of anthocyanin was obtained in cola treatments of 500 ml L -1 + essence of peppermint, 30 and 45 ml L -1 of apple extract+ rosemary essence. Besides, flowers treated by 375 ml L -1 of cola + peppermint essence had the highest chlorophyll content. Generally, the results showed that treatments used in this experiment, as accessible compounds are healthy and non-hazardous for the environment, appropriate to increase the vase life of Alstroemeria cut flowers
在本研究中，可乐浓度为25、375和500 ml L -1 +薄荷香精浓度为2000 mg L -1，苹果提取物浓度为30、45和60 ml L -1 +迷迭香香精浓度为2000 mg L -1对紫荆切花(Cv。平衡)进行了调查，以验证天然成分在花卉防腐剂溶液中的使用。本实验于2014年在高根农业科学与自然资源大学实验室进行。结果表明，可乐与薄荷香精、苹果浸膏与迷迭香香精在以上浓度下交互作用，可显著提高花的花瓶寿命、花径和花青素含量，且交互作用水平为%1。当可乐浓度为500 ml L -1时，瓶寿命最长(15 d)，而对照处理(蒸馏水)的瓶寿命最长(9 d)。苹果提取物(45 ml L -1) +迷迭香精华(2000 mg L -1)的花直径最大。以500 ml L -1 +薄荷精华液、30和45 ml L -1苹果提取物+迷迭香精华液的可乐处理中花青素含量最高。以375 ml L -1可乐+薄荷香精处理的花叶绿素含量最高。综上所述，本试验所采用的处理方法对环境无害，是一种健康的易获得化合物，适合延长桤木切花的花瓶寿命
{"title":"POTENTIAL OF INCREASING THE VASE LIFE AND IMPROVEMENT OF SOME PHYSIOLOGICAL CHARACTERISTICS OF ALSTROEMERIA CUT FLOWERS BY USING NON-HARMFUL COMPOUNDS ENVIRONMENTALLY","authors":"Mehrdad Babarabie, H. Zarei, F. Varasteh","doi":"10.22034/JCHR.2018.544123","DOIUrl":"https://doi.org/10.22034/JCHR.2018.544123","url":null,"abstract":"In this study, the concentrations of 25, 375 and 500 ml L -1 of Cola+ 2000 mg L -1 of peppermint essence and concentrations of 30, 45 and 60 ml L -1 of apple extract +2000 mg L -1 rosemary essence on Alstroemeria cut flowers (Cv. balance) were investigated to verify the use of natural ingredients in flowers preservative solutions. This experiment was conducted in the laboratory of Gorgan University of Agricultural Sciences and Natural Resources, in 2014. Results showed that the interaction of cola with peppermint essence and apple extract with rosemary essence at above concentrations increase the vase life of flower, flower diameter and anthocyanin at significantly level of %1. The highest amount of vase life was related to concentration of 500 ml L -1 of cola (15 days), while vase life in control treatment (distilled water) was 9 days. The highest flower diameter was recorded in apple extract (45 ml L -1 ) + Rosemary essence (2000 mg L -1 ). The highest amount of anthocyanin was obtained in cola treatments of 500 ml L -1 + essence of peppermint, 30 and 45 ml L -1 of apple extract+ rosemary essence. Besides, flowers treated by 375 ml L -1 of cola + peppermint essence had the highest chlorophyll content. Generally, the results showed that treatments used in this experiment, as accessible compounds are healthy and non-hazardous for the environment, appropriate to increase the vase life of Alstroemeria cut flowers","PeriodicalId":15347,"journal":{"name":"Journal of Chemical Health Risks","volume":"6 1","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"2016-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68032890","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 : 2015-09-14DOI: 10.22034/JCHR.2015.544110
Mahboub Saffari, N. Karimian, A. Ronaghi, J. Yasrebi, R. Ghasemi-Fasaei
Chemical stabilization of heavy metals is one of the soil remediation methods based on the application amendments to reduce mobility of heavy metals. A laboratory study was conducted to investigate the influence of different kinds of amendments on cadmium (Cd) stabilization in a Cd-spiked soil. The amendments were municipal solid waste compost (MSWC), Coal fly ash (CFA), rice husk biochars prepared at 300°C (B300) and 600°C (B600), zero valent iron (Fe 0 ) and zero valent manganese (Mn0). The Cd-spiked soils were separately incubated with selected amendments at the rates of 2 and 5% (W/W) for 90 days at 25 °C. Soil samples were extracted by EDTA for periods of 5 to 975min. In addition, sequential extraction was used as a suitable method for identification of chemical forms of Cd and their plant availability. The addition of amendments to soil had significant effects on desorption and chemical forms of Cd. Changes in Cd fractions and their conversion into less soluble forms were clear in all treated soils. The addition of amendments resulted in a significant reduction in mobility factor of Cd compared to the control treatment. Among all amendments tested, Fe 0 was the most effective treatment in decreasing dynamic of Cd. Biphasic pattern of Cd desorption kinetic was fitted well by the model of two first-order reactions. In general, from the practical point of view, Fe
{"title":"Immobilization of Cadmium in a Cd-Spiked Soil by Different Kinds of Amendments","authors":"Mahboub Saffari, N. Karimian, A. Ronaghi, J. Yasrebi, R. Ghasemi-Fasaei","doi":"10.22034/JCHR.2015.544110","DOIUrl":"https://doi.org/10.22034/JCHR.2015.544110","url":null,"abstract":"Chemical stabilization of heavy metals is one of the soil remediation methods based on the application amendments to reduce mobility of heavy metals. A laboratory study was conducted to investigate the influence of different kinds of amendments on cadmium (Cd) stabilization in a Cd-spiked soil. The amendments were municipal solid waste compost (MSWC), Coal fly ash (CFA), rice husk biochars prepared at 300°C (B300) and 600°C (B600), zero valent iron (Fe 0 ) and zero valent manganese (Mn0). The Cd-spiked soils were separately incubated with selected amendments at the rates of 2 and 5% (W/W) for 90 days at 25 °C. Soil samples were extracted by EDTA for periods of 5 to 975min. In addition, sequential extraction was used as a suitable method for identification of chemical forms of Cd and their plant availability. The addition of amendments to soil had significant effects on desorption and chemical forms of Cd. Changes in Cd fractions and their conversion into less soluble forms were clear in all treated soils. The addition of amendments resulted in a significant reduction in mobility factor of Cd compared to the control treatment. Among all amendments tested, Fe 0 was the most effective treatment in decreasing dynamic of Cd. Biphasic pattern of Cd desorption kinetic was fitted well by the model of two first-order reactions. In general, from the practical point of view, Fe","PeriodicalId":15347,"journal":{"name":"Journal of Chemical Health Risks","volume":"5 1","pages":"221-233"},"PeriodicalIF":0.0,"publicationDate":"2015-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68029172","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 : 2015-09-14DOI: 10.22034/JCHR.2015.544109
S. Shahbazi, F. Moëzzi, H. Poorbagher, Narges Rostamian
The present study investigated the effects of acute toxicity of malathion on behavioral and haematological parameters in the cyprinid Capoeta damascina. The specimens were collected from the Kordan River, Karaj, Iran in August, 2014 and were exposed to different concentrations of malathion at the laboratory (24, 48, 72 mg L -1 ) based on 96h-LC (10; 30; 50; 90) which was 6.08 (5.22-7.18) mg L -1 . The animals were then exposed to 0.76, 1.00 and 1.52 mg L -1 of malathion for 10 days. Blood samples were collected in days 1, 5 and 10. Red blood cell (RBC), white blood cell (WBC), hemoglobin (Hb), hematocrit (PVC), mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH), and mean corpuscular hemoglobin concentration (MCHC) were measured. Behavioral abnormalities were observed in fishes exposed to high levels of malathion. The specimens exposed to malathion had significantly lower RBC, WBC, Hb, PVC but higher MCV and MCH than those of the control group. No significant difference was detected in MCHC the exposed and control specimens. Hematological parameters (except MCHC) were significantly correlated with exposure time. In conclusion, malathion showed extensive haematological effects on C. damascina that might be used as bioindicator of this pesticide in flowing waters.
本文研究了马拉硫磷急性毒性对大马鲤行为和血液学参数的影响。样本采集于2014年8月，采集自伊朗Karaj的Kordan河，并在实验室暴露于不同浓度的马拉硫磷(24、48、72 mg L -1)，基于96h-LC (10;30;50;90)，为6.08 (5.22-7.18)mg L -1。然后分别暴露于马拉硫磷浓度为0.76、1.00和1.52 mg L -1的环境中10天。于第1、5、10天采集血样。测定红细胞(RBC)、白细胞(WBC)、血红蛋白(Hb)、红细胞压积(PVC)、平均红细胞体积(MCV)、平均红细胞血红蛋白(MCH)、平均红细胞血红蛋白浓度(MCHC)。在暴露于高水平马拉硫磷的鱼类中观察到行为异常。与对照组相比，马拉硫磷暴露组红细胞、白细胞、血红蛋白、聚氯乙烯明显降低，MCV和MCH明显升高。暴露标本与对照标本的MCHC无显著差异。血液学参数(MCHC除外)与暴露时间显著相关。综上所述，马拉硫磷对大马士革红蝇具有广泛的血液学影响，可作为该农药在流动水体中的生物指标。
{"title":"Effects of Malathion Acute Toxicity on Behavioral and Haematological Parameters in Capoeta damascina (Cypriniformes: Cyprinidae)","authors":"S. Shahbazi, F. Moëzzi, H. Poorbagher, Narges Rostamian","doi":"10.22034/JCHR.2015.544109","DOIUrl":"https://doi.org/10.22034/JCHR.2015.544109","url":null,"abstract":"The present study investigated the effects of acute toxicity of malathion on behavioral and haematological parameters in the cyprinid Capoeta damascina. The specimens were collected from the Kordan River, Karaj, Iran in August, 2014 and were exposed to different concentrations of malathion at the laboratory (24, 48, 72 mg L -1 ) based on 96h-LC (10; 30; 50; 90) which was 6.08 (5.22-7.18) mg L -1 . The animals were then exposed to 0.76, 1.00 and 1.52 mg L -1 of malathion for 10 days. Blood samples were collected in days 1, 5 and 10. Red blood cell (RBC), white blood cell (WBC), hemoglobin (Hb), hematocrit (PVC), mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH), and mean corpuscular hemoglobin concentration (MCHC) were measured. Behavioral abnormalities were observed in fishes exposed to high levels of malathion. The specimens exposed to malathion had significantly lower RBC, WBC, Hb, PVC but higher MCV and MCH than those of the control group. No significant difference was detected in MCHC the exposed and control specimens. Hematological parameters (except MCHC) were significantly correlated with exposure time. In conclusion, malathion showed extensive haematological effects on C. damascina that might be used as bioindicator of this pesticide in flowing waters.","PeriodicalId":15347,"journal":{"name":"Journal of Chemical Health Risks","volume":"5 1","pages":"209-220"},"PeriodicalIF":0.0,"publicationDate":"2015-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68029158","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 : 2014-01-01DOI: 10.22034/JCHR.2018.544067
G. H. Talaei, Shocofeh Gholami, Z. Pishva, M. A. Dehaghi
Considering the importance of medicinal plants growth and biological application of fertilizers with sustainable agricultural production in order to eliminate or reduce chemical input to achieve desirable and sustainable quality, an experimental research was conducted based on a randomized complete block design with two factors of chemical nitrogen (46% urea nitrogen) at two levels (Zero, 25 and 50 kg/ha -1 ), biological nitrogen (Azotobacter) with trade name Nitroxin at 2 levels inoculated and non-inoculated in 2011. The results of analysis of variance showed that the effects of biological fertilizers (Azotobacter) Nitroxin of chemical (urea 46%) nitrogen in different treatments on plant height, umbel number per plant, grain number per umbel, biological yield, grain yield, harvest index (HI) and essential oil yield were significant at P≤0.01. The results showed that the greatest plant highest (28.18 cm), biological yield (201.187 g.m 2 ), grain yield (75.600 g.m 2 ) and essential oil yield (2.115 g.m 2 ) were obtained by a treatment of Nitroxin + chemical nitrogen (25 kg/ha -1 ). In general, the results of the present study revealed that the application of biological fertilizers plays a remarkable role in improving yield quality and quantity in Cumin and can be viewed as a suitable replacement for chemical fertilizers.
考虑到药用植物生长和化肥生物施用对农业可持续生产的重要性，以消除或减少化学投入，达到理想的可持续质量，采用随机完全区组设计，在2个水平(0、25和50 kg/ha -1)下对化学氮(46%尿素氮)进行了试验研究。生物氮(Azotobacter)，商品名Nitroxin, 2011年接种和未接种2个水平。方差分析结果表明，不同处理下生物肥(固氮菌)、化学氮素(尿素46%)对水稻株高、单株分穗数、每分穗粒数、生物产量、籽粒产量、收获指数(HI)和精油产量的影响均极显著(P≤0.01)。结果表明，氮素+化学氮(25 kg/ha -1)处理可获得植株最高(28.18 cm)、生物产量(201.187 g m 2)、籽粒产量(75.600 g m 2)和挥发油产量(2.115 g m 2)。综上所述，本研究结果表明，施用生物肥料对提高孜然产量的质量和数量有显著的作用，可以作为化学肥料的合适替代品。
{"title":"Effects of Biological and Chemical Fertilizers Nitrogen on Yield Quality and Quantity in Cumin (Cuminum Cyminum L.)","authors":"G. H. Talaei, Shocofeh Gholami, Z. Pishva, M. A. Dehaghi","doi":"10.22034/JCHR.2018.544067","DOIUrl":"https://doi.org/10.22034/JCHR.2018.544067","url":null,"abstract":"Considering the importance of medicinal plants growth and biological application of fertilizers with sustainable agricultural production in order to eliminate or reduce chemical input to achieve desirable and sustainable quality, an experimental research was conducted based on a randomized complete block design with two factors of chemical nitrogen (46% urea nitrogen) at two levels (Zero, 25 and 50 kg/ha -1 ), biological nitrogen (Azotobacter) with trade name Nitroxin at 2 levels inoculated and non-inoculated in 2011. The results of analysis of variance showed that the effects of biological fertilizers (Azotobacter) Nitroxin of chemical (urea 46%) nitrogen in different treatments on plant height, umbel number per plant, grain number per umbel, biological yield, grain yield, harvest index (HI) and essential oil yield were significant at P≤0.01. The results showed that the greatest plant highest (28.18 cm), biological yield (201.187 g.m 2 ), grain yield (75.600 g.m 2 ) and essential oil yield (2.115 g.m 2 ) were obtained by a treatment of Nitroxin + chemical nitrogen (25 kg/ha -1 ). In general, the results of the present study revealed that the application of biological fertilizers plays a remarkable role in improving yield quality and quantity in Cumin and can be viewed as a suitable replacement for chemical fertilizers.","PeriodicalId":15347,"journal":{"name":"Journal of Chemical Health Risks","volume":"4 1","pages":"55-64"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68031531","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 : 2014-01-01DOI: 10.22034/JCHR.2018.544052
F. A. Afjeh, A. Bassiri, A. M. Nafchi
Osmotic dehydration under discontinuous reduced pressure is one of the new methods of preparation fruits and vegetable processing with in view of good health. Processing of foods at high temperatures used to cook them can cause the formation of carcinogenic substances like acrylamide, and this risk remains even if the trans-fat is removed. The low temperatures employed in this method resulted in the products with the desired texture, nutritional, and colour. The purpose of this research was evaluation of the variable effects of osmotic dehydration process (ambient pressure, contact time of product and solution, concentration and temperature of osmotic solution) on the quality factors of product (colour changes, texture, moisture, oil uptake, and water loss to solid gain ratio) and achieving the optimum process conditions. Studying the quality parameters of the product, the temperature range of osmotic solution, pressure, concentration of the osmotic solution and contact time of product and solution were assumed as 30 to 50°C, 500 to 700 mbar, 30 to 50% and 60 to 180 min, respectively. The test plans involving 31 tests were obtained by using response surface statistical models and central composite design. They were fried at the condition of 108oC, 8 min and 320 mbar by using statistical correlations, 48.71oC for the osmotic solution temperature, 592.07 mbar for the pressure, 62.92 min for the time and 34.87% for the osmotic solution. Concentrations were obtained as optimum conditions of osmotic dehydration of kiwi slices under reduced pressure. In summary combination of osmotic dehydration and vacuum frying improved the quality of the final fried kiwi, so this method is recommended for production of healthy products.
{"title":"Optimization of Vacuum Frying Parameters in Combination with Osmotic Dehydration of Kiwi Slices to Produce Healthy Product","authors":"F. A. Afjeh, A. Bassiri, A. M. Nafchi","doi":"10.22034/JCHR.2018.544052","DOIUrl":"https://doi.org/10.22034/JCHR.2018.544052","url":null,"abstract":"Osmotic dehydration under discontinuous reduced pressure is one of the new methods of preparation fruits and vegetable processing with in view of good health. Processing of foods at high temperatures used to cook them can cause the formation of carcinogenic substances like acrylamide, and this risk remains even if the trans-fat is removed. The low temperatures employed in this method resulted in the products with the desired texture, nutritional, and colour. The purpose of this research was evaluation of the variable effects of osmotic dehydration process (ambient pressure, contact time of product and solution, concentration and temperature of osmotic solution) on the quality factors of product (colour changes, texture, moisture, oil uptake, and water loss to solid gain ratio) and achieving the optimum process conditions. Studying the quality parameters of the product, the temperature range of osmotic solution, pressure, concentration of the osmotic solution and contact time of product and solution were assumed as 30 to 50°C, 500 to 700 mbar, 30 to 50% and 60 to 180 min, respectively. The test plans involving 31 tests were obtained by using response surface statistical models and central composite design. They were fried at the condition of 108oC, 8 min and 320 mbar by using statistical correlations, 48.71oC for the osmotic solution temperature, 592.07 mbar for the pressure, 62.92 min for the time and 34.87% for the osmotic solution. Concentrations were obtained as optimum conditions of osmotic dehydration of kiwi slices under reduced pressure. In summary combination of osmotic dehydration and vacuum frying improved the quality of the final fried kiwi, so this method is recommended for production of healthy products.","PeriodicalId":15347,"journal":{"name":"Journal of Chemical Health Risks","volume":"4 1","pages":"13-22"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68031916","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 : 2013-01-01DOI: 10.22034/JCHR.2018.544039
M. Ahmadi, Z. Alipour, A. Firuzi
Polycyclic Aromatic Hydrocarbons (PAHs) are one of the most important organic pollutants frequently found in the environment. In this experiment, the effect of phytoremediation as a cost effective method was studied on the concentration of anthracene (C14H10) which is one of PAHs. The effect of sorghum (V1), hairy vetch (V2) and oat (V3) was studied under four concentrations of anthracene (S1, S2, S3 and S4) in soil. In S1 level which pollution was the lowest, the three plants had the highest reduction rate. The reduction rate was decreased by increasing the pollution level (S2 and S3),; the lowest reduction rate was observed in S4 level which had the highest pollution level. There was significant difference between the three plants and the fallow. Generally, hairy vetch had the highest phytoremediating capacity and resistance compared with the other plants.
{"title":"Investigation of the Possibility of Phytoremediating a Soil Contaminated with Anthracene","authors":"M. Ahmadi, Z. Alipour, A. Firuzi","doi":"10.22034/JCHR.2018.544039","DOIUrl":"https://doi.org/10.22034/JCHR.2018.544039","url":null,"abstract":"Polycyclic Aromatic Hydrocarbons (PAHs) are one of the most important organic pollutants frequently found in the environment. In this experiment, the effect of phytoremediation as a cost effective method was studied on the concentration of anthracene (C14H10) which is one of PAHs. The effect of sorghum (V1), hairy vetch (V2) and oat (V3) was studied under four concentrations of anthracene (S1, S2, S3 and S4) in soil. In S1 level which pollution was the lowest, the three plants had the highest reduction rate. The reduction rate was decreased by increasing the pollution level (S2 and S3),; the lowest reduction rate was observed in S4 level which had the highest pollution level. There was significant difference between the three plants and the fallow. Generally, hairy vetch had the highest phytoremediating capacity and resistance compared with the other plants.","PeriodicalId":15347,"journal":{"name":"Journal of Chemical Health Risks","volume":"3 1","pages":"69-76"},"PeriodicalIF":0.0,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68031617","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 : 2013-01-01DOI: 10.22034/JCHR.2018.544018
Z. Torabi, A. M. Nafchi
In this paper effect of SiO2 nanoparticles was investigated on potato starch films. Potato starch films were prepared by casting method with addition of nano-silicon dioxide and a mixture of sorbitol/glycerol (weight ratio of 3 to 1) as plasticizers. SiO2 nanoparticles incorporated to the potato starch films at different concentrations 0, 1, 2, 3, and 5% of total solid, and the films were dried under controlled conditions. Physicochemical properties such as water absorption capacity (WAC), water vapor permeability (WVP) and mechanical properties of the films were measured. Results show that by increasing the concentration of silicon dioxide nanoparticles, mechanical properties of films can be improved. Also incorporation of silicon dioxide nanoparticles in the structure of biopolymer decrease permeability of the gaseous molecules such as water vapor. In summary, addition of silicon dioxide nanoparticles improves functional properties of potato starch films and these bio Nano composites can be used in food packaging.
{"title":"The Effects of SiO2 Nanoparticles on Mechanical and Physicochemical Properties of Potato Starch Films","authors":"Z. Torabi, A. M. Nafchi","doi":"10.22034/JCHR.2018.544018","DOIUrl":"https://doi.org/10.22034/JCHR.2018.544018","url":null,"abstract":"In this paper effect of SiO2 nanoparticles was investigated on potato starch films. Potato starch films were prepared by casting method with addition of nano-silicon dioxide and a mixture of sorbitol/glycerol (weight ratio of 3 to 1) as plasticizers. SiO2 nanoparticles incorporated to the potato starch films at different concentrations 0, 1, 2, 3, and 5% of total solid, and the films were dried under controlled conditions. Physicochemical properties such as water absorption capacity (WAC), water vapor permeability (WVP) and mechanical properties of the films were measured. Results show that by increasing the concentration of silicon dioxide nanoparticles, mechanical properties of films can be improved. Also incorporation of silicon dioxide nanoparticles in the structure of biopolymer decrease permeability of the gaseous molecules such as water vapor. In summary, addition of silicon dioxide nanoparticles improves functional properties of potato starch films and these bio Nano composites can be used in food packaging.","PeriodicalId":15347,"journal":{"name":"Journal of Chemical Health Risks","volume":"22 1","pages":"33-41"},"PeriodicalIF":0.0,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68030534","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 : 2013-01-01DOI: 10.22034/JCHR.2018.544048
S. Ashraf, H. Afshari
An interpolation technique, ordinary Inverse Distance Weighted (IDW), was used to obtain the spatial distribution of groundwater quality parameters in Damghan plain of Iran. According to Scofield guidelines for TDS value, 60% of the water samples were harmful for irrigation purposes. Regarding to EC parameter, more than 60% of studied area was laid in bad range for irrigation purposes. The most dominant anion was Cl - and 10% of water samples showed a very hazardous class. According to Doneen guidelines for chloride value, 100% of collected water from the aquifer had slight to moderate problems for irrigation water purposes. The predominant cations in Damghan plain aquifer were according to Na + > Ca ++ > Mg ++ > K + . Sodium ion was the dominant cation and regarding to Na + content guidelines, almost all groundwater samples had problem for foliar application. Calcium ion distribution was within usual range. The magnesium ion concentration is generally lower than sodium and calcium. The majority of the samples showed Mg ++ amount within usual range. Also K + value ranged from 0.1 to 0.23 meq/L and all the water samples had potassium values within the permissible limit. Based on SAR criterion 80 % of collected water had slight to moderate problems. The SSP values were found from 2.87 to 6.87%. According to SAR value, thirty percent of ground water samples were doubtful class. The estimated amounts of RSC were ranged from 0.4-2 and based on RSC criterion, twenty percent of groundwater samples had slight to moderate problems Normal 0 false false false EN-US X-NONE AR-SA /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Calibri","sans-serif"; mso-bidi-language:AR-SA;}
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Pub Date : 2012-12-01DOI: 10.22034/JCHR.2018.544009
F. Bagheban-Shahri, A. Niazi, A. Akrami
A new spectrophotometric method was developed for the simultaneous of ternary mixtures of nitrophenol isomers, without prior separation steps. This method is called the first derivative of the density ratio spectra. All factors affecting on the sensitivity were optimized and the linear dynamic range for determination of nitrophenol isomers was found. The method made use of a derivative of the double-divisor- ratio spectra of optical density. In this case, the linear determination ranges are 1.0-25.0 g mL -1 for m- nitrophenol, 1.0-25.0 g mL -1 for o-nitrophenol and 1.0-15.0 g mL -1 for p-nitrophenol. The RMSEP for m- nitrophenol, o-nitrophenol and p-nitrophenol by proposed method was 0.4907, 0.4779 and 0.2068, respectively. The method developed in this paper was rapid, easy to apply, not expensive and it was suitable for analyzing to overlapping signals of compounds in their mixtures without any chemical pre-treatment and also, the proposed method was satisfactorily applied to the rapid simultaneous determination of m-nitrophenol, o-nitrophenol and p-nitrophenol in synthetic and water samples. i , , , , , ,
建立了一种新的分光光度法，可同时测定硝基酚同分异构体的三元混合物，无需预先分离。这种方法称为密度比谱的一阶导数。对影响灵敏度的各因素进行了优化，确定了测定硝基酚异构体的线性动态范围。该方法利用了光密度的双因子比谱的导数。在这种情况下，对硝基苯酚的线性测定范围为1.0-25.0g mL -1，邻硝基苯酚的线性测定范围为1.0-25.0g mL -1，对硝基苯酚的线性测定范围为1.0-15.0g mL -1。该方法对间硝基酚、邻硝基酚和对硝基酚的RMSEP分别为0.4907、0.4779和0.2068。该方法快速、简便、成本低，适用于化合物混合物中重叠信号的分析，无需任何化学预处理，可用于合成样品和水样中间硝基酚、邻硝基酚和对硝基酚的快速同时测定。一、整机整机整机，，，，，，
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Pub Date : 2012-08-04DOI: 10.22034/JCHR.2012.543993
G. laei
In this study theeffect ofdrought stress was investigated on grain yield and oil rate and protein percentage of four varieties of castor in the climatic conditions of Damghan. The experiment was done in the research farm of Damghan Islamic Azad University(Iran)in 2011 assplit plots in a randomized complete block design with three replications. The main plots of drought stress were 5, 10 and15 days and another factor included four varities of castor ( one-flower, two- flower, local and red-flower) which were performed in stable density of fivebushes per cultured square meter. Therefore, after gremination, the amount of irrigation water was recorded using volumetric meters. The traits evaluated included oil rate,seed protein percentage, andgrainyield. The results show that two-flower variety with 1241 kg per hectare on 5-day drought stress has the most grain yield. Most oil rate was observed in two-flower variety on 5 day drought stress with 496.4 kg/ha.
研究了干旱胁迫对Damghan气候条件下4个蓖麻品种籽粒产量、出油率和蛋白率的影响。试验于2011年在伊朗达姆汉伊斯兰阿扎德大学研究农场进行，采用完全随机区组设计，3个重复。干旱胁迫主要为5、10和15 d，另一个影响因素为1花、2花、地方和红花4个蓖麻品种，以每栽培平方米5丛的稳定密度进行。因此，在发芽后，用体积计记录灌溉水量。评价的性状包括出油率、籽粒蛋白率和籽粒产量。结果表明，2花品种在5 d干旱胁迫下产量最高，产量为1241 kg /公顷。两花品种在5 d干旱胁迫下出油率最高，为496.4 kg/ha。
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