scholarly journals Allelopathic effect of herbal formulation containing Ferula assa-foetida L. essential oil and castor oil (Ricinus communis L.) as an herbicide on Amaranthus retroflexus L. seed germination

2021 ◽  
Vol 20 (80) ◽  
pp. 69-82
Author(s):  
Zahra Tarassoli ◽  
Mohammadreza Labbafi ◽  
Farzaneh Jokar Shoorijeh ◽  
◽  
◽  
...  
Keyword(s):  
Seed Germination ◽  
Essential Oil ◽  
Castor Oil ◽  
Ricinus Communis ◽  
Amaranthus Retroflexus ◽  
Allelopathic Effect ◽  
Herbal Formulation ◽  
Ricinus Communis L

scholarly journals Essential oil of the leaves of Ricinus communis L.: In vitro cytotoxicity and antimicrobial properties

2012 ◽  
Vol 11 (1) ◽  
pp. 102 ◽  
Author(s):  
Zied Zarai ◽  
Ines Chobba ◽  
Riadh Mansour ◽  
Ahmed Békir ◽  
Néji Gharsallah ◽  
...  
Keyword(s):  
Essential Oil ◽  
Ricinus Communis ◽  
Antimicrobial Properties ◽  
In Vitro Cytotoxicity ◽  
Ricinus Communis L

scholarly journals Germination and initial development of canola and radish submitted to castor leaves aqueous extracts

2016 ◽  
Vol 7 (1) ◽  
pp. 104
Author(s):  
Carlos Alberto Gonsiorkiewicz Rigon ◽  
Adriana Tourinho Salamoni ◽  
Luan Cutti ◽  
Adalin Cezar Morais de Aguiar
Keyword(s):  
Seed Germination ◽  
Castor Bean ◽  
Ricinus Communis ◽  
Initial Growth ◽  
Aqueous Extracts ◽  
Brassica Napus L ◽  
Initial Development ◽  
Allelopathic Potential ◽  
Ricinus Communis L ◽  
Radish Seed

This study aimed to evaluate the allelopathic activity of aqueous extracts of castor bean (Ricinus communis L.) leaves on germination and initial growth of canola (Brassica napus L.) and radish (Raphanus sativus L.) seedlings. Two experiments were conducted, usingcanola seeds for the first, which was installed in a 2x7 factorial scheme (with two photoperiods – dark and light and seven extracts concentrations - 0, 1, 2, 4, 8, 16 and 32%). The second experiment consisted of an evaluation of radish seed germination submitted to seven concentrations of the extracts in the dark photoperiod. The germination of the canola seeds was reduced in the dark, and the use of extracts at concentrations of 16% and 32%inhibited seeds germination for both studied photoperiods. The radish seed germination was completely inhibited when the concentration of 32% was used, however, at the concentrations of 4, 8 and 16% a reduction on rootand hypocoyl development of the seedlings were observed, affirming the high allelopathic potential of castor bean aqueous extracts on canola and radish.

Phosphorylation of glyoxysomal malate synthase from castor oil seeds Ricinus communis L.

FEBS Letters ◽  
1988 ◽  
Vol 234 (2) ◽  
pp. 275-279 ◽  
Author(s):  
Yan-Ping Yang ◽  
Douglas D. Randall ◽  
Richard N. Trelease
Keyword(s):  
Castor Oil ◽  
Ricinus Communis ◽  
Malate Synthase ◽  
Oil Seeds ◽  
Ricinus Communis L

scholarly journals Effect of supplemental Ca2+ on NaCl-stressed castor plants (Ricinus communis L.)

2012 ◽  
Vol 71 (1) ◽  
pp. 13-29 ◽  
Author(s):  
Seema Joshi ◽  
Neha Patel ◽  
Indu Pandey ◽  
Amar Pandey
Keyword(s):  
Seed Germination ◽  
Plant Growth ◽  
Critical Level ◽  
Saline Soil ◽  
Ricinus Communis ◽  
Plant Tissues ◽  
Beneficial Effects ◽  
Ricinus Communis L ◽  
Castor Plant ◽  
Level 1

Effect of supplemental Ca2+on NaCl-stressed castor plants (Ricinus communisL.)Greenhouse experiments were conducted to assess the effects of supplemental Ca2+in salinised soil on germination and plant growth response of castor plant (Ricinus communisL. Var. Avani-31, Euphorbiaceae). NaCl amounting to 390 g was thoroughly mixed with soil of seven lots, of 100 kg each, to give electrical conductivity of 4.1 dS m-1. Further, Ca(NO3)2x 4H20 to the quantity of 97.5, 195, 292.5, 390, 487.5, and 585 g was separately mixed with soil of six lots to give 1:0.25, 1:0.50, 1:0.75, 1:1, 1:1.25, and 1:1.50 Na+/Ca2+ratios, respectively. The soil of the seventh lot contained only NaCl and its Na+/Ca2+ratio was 1:0. Soil without addition of NaCl and Ca (NO3)2x 4H20 served as control, with a 0:0 Na+/Ca2+ratio. Salinity significantly retarded seed germination and plant growth, but the deleterious effects of NaCl on seed germination were ameliorated and plant growth was restored with Ca2+supply at the critical level (1:0.25 Na+/Ca2+ratio) to salinised soil. Supply of Ca2+above the critical level further retarded seed germination and plant growth due to the increased soil salinity. Salt stress reduced N, P, K+and Ca2+content in plant tissues, but these nutrients were restored by addition of Ca2+at the critical level to saline soil. In contrast, Na+content in plant tissues significantly increased in response to salinity, but significantly decreased with increasing Ca2+supply to saline soil. The results are discussed in terms of the beneficial effects of Ca2+supply on the plant growth ofRicinus communisgrown under saline conditions.

scholarly journals Produksi Metil 12-Hidroksistearat via Proses Hidrogenasi Ester Minyak Jarak

2020 ◽  
Vol 18 (1) ◽  
pp. 7
Author(s):  
Indra G. Pasaribu ◽  
Arry K. Rizky ◽  
Mario C. Gultom ◽  
Retno G. Dewi ◽  
Tirto P. Prakoso ◽  
...  
Keyword(s):  
Methyl Ester ◽  
Ricinoleic Acid ◽  
Iodine Value ◽  
Castor Oil ◽  
Ricinus Communis ◽  
Acid Methyl Ester ◽  
Hydrogenation Process ◽  
Operating Pressure ◽  
Acid Methyl ◽  
Ricinus Communis L

bstrak. Minyak jarak kaliki (Ricinus communis L.) merupakan salah satu bahan baku terbarukan yang banyak diaplikasikan di berbagai industri kimia. Salah satu dari turunan minyak jarak kaliki yaitu metil 12-hidroksistearat merupakan metil ester yang memiliki manfaat dalam berbagai jenis industri, khususnya industri pelumas. Makalah ini membahas produksi metil 12-hidroksistearat via hidrogenasi ester minyak jarak dalam reaktor mini-pilot. Makalah ini membahas kondisi optimum proses hidrogenasi dari metil ester risinoleat dengan melakukan variasi terhadap tekanan dan temperatur operasi. Tekanan dan temperatur operasi proses hidrogenasi divariasikan pada rentang 2-4 bar dan 150-210℃. Diperoleh produk hidrogenasi metil ester risinoleat dengan konsentrasi massa metil 12-hidroksistearat mencapai 61,28% dan angka iodin 23,84. Peningkatan temperatur dan tekanan operasi meningkatkan konversi metil 12-hidroksistearat dan menurunkan angka iodin. Pada rentang variasi kondisi, kondisi operasi optimum untuk proses ini adalah temperatur 210℃ dan tekanan 4 bar. Penambahan waktu reaksi hidrogenasi selama 3 jam menghasilkan penurunan angka iodin hingga mencapai 9,82 dan bentuk fisik seperti mentega. Kata kunci: angka iodin, hidrogenasi, metil 12-hidroksistearat, metil ester risinoleat, minyak jarak kaliki. Abstract. Production of Methyl 12-Hydroxystearate through the Hydrogenation Process of Castor Oil Esters. Castor oil (Ricinus communis L.) is one of renewable raw materials widely applied in various chemical industries. One of the castor oil derivatives is methyl 12-hydroxistearate, a methyl ester fatty acid which has been applied in various industries especially lubricants industry. This paper discusses the methyl ester production of methyl 12-hydroxystearate from castor oil via hydrogenation of ester of castor oil in a mini-pilot reactor. The purpose of this study is to determine the optimum operating condition of the hydrogenation process of the ricinoleic acid methyl ester by varying operating pressure and temperature. The operating pressure and temperature of the hydrogenation process were varied in the range of 2-4 bar and 150-210℃. The experimental results show that the hydrogenation process of ricinoleic acid methyl ester produces methyl-12-hydroxistearate with concentration up to 61.28%-wt and Iodine Value of 23.84. Higher operating temperature and pressure increase the conversion of methyl 12- hydroxistearate and reduce the iodine value. Further, the optimum operation condition for this process is at 210℃ and 4 bar. Increasing reaction time for about 3 hours results in a significant reduction of iodine value up to 9.82. Keywords: castor oil, hydrogenation, iodine number, methyl 12-hidroxystearate, methyl ester ricinoleic. Graphical Abstract

scholarly journals Seed Germination in Six Anticancerous Plants of Bangladesh

2019 ◽  
Vol 45 (2) ◽  
pp. 151-159
Author(s):  
Nahid Sultana ◽  
M Oliur Rahman ◽  
Md Abul Hassan
Keyword(s):  
Seed Germination ◽  
Ricinus Communis ◽  
Germination Rate ◽  
Calotropis Procera ◽  
Time Rate ◽  
Plumbago Zeylanica ◽  
Ricinus Communis L ◽  
Jatropha Gossypifolia ◽  
Leonurus Sibiricus ◽  
Boerhavia Diffusa

Six medicinal plants, namely Boerhavia diffusa L., Calotropis procera (Ait.) R. Br., Jatropha gossypifolia L., Leonurus sibiricus L., Plumbago zeylanica L. and Ricinus communis L. of Bangladesh having anticancerous properties were investigated with a view to knowing their seed germination time, rate and pattern. The minimum days taken for seed germination in B. diffusa, C. procera, J. gossypifolia, L. sibiricus, P. zeylanica and R. communis were 70, 9, 24, 75, 11 and 14, respectively. The maximum time (130 days) required for germination was observed in Leonurus sibiricus. The highest germination rate (100%) was observed in Plumbago zeylanica, while the lowest rate (10%) was found in Ricinus communis. Epigeal type of germination was noted in all the species employed. Asiat. Soc. Bangladesh, Sci. 45(2): 151-159, December 2019

scholarly journals Production and environmental impact of Ricinus Communis L oil for biofuel purposes

DYNA ◽  
2019 ◽  
Vol 86 (210) ◽  
pp. 137-142
Author(s):  
Laksmi Penabad Sanz ◽  
Diego Rubio Erazo ◽  
Pedro Antonio Rodríguez Ramos ◽  
Lourdes Zumalacárregui de Cárdenas ◽  
Osney Pérez Ones
Keyword(s):  
Energy Source ◽  
Environmental Impact ◽  
Castor Oil ◽  
Ricinus Communis ◽  
Business Plan ◽  
Economic Feasibility ◽  
Middle Level ◽  
Impact Categories ◽  
Ricinus Communis L ◽  
Oil Plant

This research shows the benefits of castor oil biomass with biofuel purposes, as a renewable energy source for Ecuador, as well as the economic feasibility of its production. The main considerations of every step of the business plan are summarized, placing greater emphasis on environmental and financial processes. Nineteen impact categories at the middle level and four impact categories at the final level were considered. The weighted environmental impact of the oil production for biofuel purposes ranks as a small impact: 9.74 %, so castor oil plant is environmentally friendly biomass.

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