Eksakta : Berkala Ilmiah Bidang MIPA最新文献

筛选

英文中文

Leaf Anatomical Modification in Drought of Rice Varieties (Oryza sativa L.) 水稻品种叶片在干旱条件下的解剖变异

Eksakta : Berkala Ilmiah Bidang MIPA Pub Date : 2019-08-31 DOI: 10.24036/eksakta/vol20-iss2/201

Anggara Dwi Putra Zagoto, V. Violita

{"title":"Leaf Anatomical Modification in Drought of Rice Varieties (Oryza sativa L.)","authors":"Anggara Dwi Putra Zagoto, V. Violita","doi":"10.24036/eksakta/vol20-iss2/201","DOIUrl":"https://doi.org/10.24036/eksakta/vol20-iss2/201","url":null,"abstract":"Each organ plant has been formed perfectly to support physiological processes in an unfavorable environmental condition. Rice (Oryza sativa L.) be included plants sensitive to drought conditions during a stage of growth and development. This will cause pressure (stress) resulting in a decrease in rate metabolism in leaf cells. Leaf anatomical characteristics are criteria that can be used to identify plants that are tolerant to drought. Anatomical response leaves in drought conditions inform the development of leaf photosynthetic parts carrying out changes in anatomical structure morphology includes changes in cell walls, organ size, changes in direction growth, including dropping leaves and enhancing the life cycle. The research aimed to determine the anatomic response leaves rice varieties (Oryza sativa L.) to drought stress. Five rice varieties used were given drought-stress treatment for 12 days. Identification leaf anatomical structures using microscopic slices of transverse was made according to the paraffin method. Changes in the anatomical structure of leaves of drought-stress have decreased bulliform cells increase in size, the thickness epidermis cells in an effort to retain the water content in cells, and reducing the size and total stomata with purpose process control flow of transpiration and water use efficiency.","PeriodicalId":127466,"journal":{"name":"Eksakta : Berkala Ilmiah Bidang MIPA","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128866169","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}

引用次数: 4

Isolation and Characterization of Flavonoids from Black Glutinous Rice (Oryza Sativa L. Var Glutinosa) 黑糯米(Oryza Sativa L. Var Glutinosa)中黄酮类化合物的分离与鉴定

Eksakta : Berkala Ilmiah Bidang MIPA Pub Date : 2019-08-31 DOI: 10.24036/eksakta/vol20-iss2/186

S. B. Etika, I. Iryani

{"title":"Isolation and Characterization of Flavonoids from Black Glutinous Rice (Oryza Sativa L. Var Glutinosa)","authors":"S. B. Etika, I. Iryani","doi":"10.24036/eksakta/vol20-iss2/186","DOIUrl":"https://doi.org/10.24036/eksakta/vol20-iss2/186","url":null,"abstract":"This study aims to isolate and characterize the isolated flavonoid compounds from glutinous rice (Oryza Sativa L. Var Glutinosa). The method that used was maserasi with methanol solvent, multilevel fractionation with n-hexane and ethyl acetate. The separation of chemical components using column chromatography and tested its purity by melting point test and TLC. Characterization of isolated flavonoids using color reagents (H2SO4, NaOH, Mg-HCl), KKt-2A, UV-Vis and FT-IR. The powder (amorphous) flavonoid isolation results have a melting point of 236.5-237.8 oC. Flavonoid powder added H2SO4 produces a yellow color, with NaOH producing a violet color, and Mg-HCl produces a red color. KKt-2A with a BAA developer has Rf 0.49 and 15% acetic acid having Rf 0.09. The UV-Vis spectrum shows maximum absorption at 532 nm wavelength. The results of powder analysis (amorphous) flavonoid using FT-IR showed absorption at wave number 3.330,40 cm-1, 2838,96 cm-1, 1,656,23 cm-1, 1,421,85 cm-1, 1,112,25 cm-1, 1,019,27 cm-1 and 697,76 cm-1. According to those data it can be concluded that flavonoids that isolated have the form of powder (amorphous) which belong to anthocyanin group that have o-diOH on ring B and have a conjugated double bond.Keywords- Black Sticky Rice, Flavonoid, Fractionation, FT-IR, Maserasi, UV-Vis.","PeriodicalId":127466,"journal":{"name":"Eksakta : Berkala Ilmiah Bidang MIPA","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116362433","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}

引用次数: 1

首页上一页