essential oil yield
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2022 ◽  
Vol 263 ◽  
pp. 107459
Author(s):  
Ali Akbarzadeh ◽  
Ali Shahnazari ◽  
Mirkhalegh Ziatabar Ahmadi ◽  
Mohammad Akbarzadeh

2022 ◽  
Vol 52 (5) ◽  
Author(s):  
Aurislaine Santos Ribeiro ◽  
Suzan Kelly Vilela Bertolucci ◽  
Alexandre Alves de Carvalho ◽  
Wesley Naves Tostes ◽  
Adriane Duarte Coelho ◽  
...  

ABSTRACT: Pogostemon cablin (Blanco) Benth. is an aromatic species popularly known as patchouli. The essential oil rich in patchoulol extracted from leaves is used by the pharmaceutical industries. The objective was to investigate the effects of shade nets and shading intensities on P. cablin growth, anatomy, chemical composition and essential oil content. The experiment was conducted with two types of shade nets (black and Aluminet), three light intensities (30, 50, and 70% shading) and full sun. The different light intensities influenced the growth and the essential oil yield, and chemical composition. Patchouli plants grown in an environment with shading showed higher values for the leaf, stem, root ant total dry weights compared to full sun. At 50% of shading, Aluminet provided gain in stem and total dry weights. Aluminet and black net at 50 and 70% of shading enhance essential oil yield. Patchoulol and pogostol contents were higher under full sun, and, black net and Aluminet at 50% shading. The environment for patchouli cultivation can be improved by use shade nets, especially with Aluminet at 50% of shading.


2021 ◽  
Vol 5 (2) ◽  
pp. 55-61
Author(s):  
Midekesa Chala Mamo

Wondo Genet area, which is located in the Sidama zone of south Ethiopia, is characterized by a rapidly increasing human population and scarcity of arable land per household. There is a need for developing an efficient cropping system to use the limited land efficiently and to enhance food security. An experiment was, therefore, was conducted at Wondo Genet Agricultural Research Center under irrigated during the 2018 cropping season to examine the growth and yield of sweet basil under different planting densities and row arrangements in tomato-sweet basil Intercropping System. The experiment was conducted with two basil row arrangements (one tomato row alternating with one basil row (1T:1B) or with two basil rows (1T:2B)) and four basil population densities (66666, 50000, 33333 and 16666 plants.ha<sup>-1</sup>) factorial arrangement in RCBD with three replications each consisting of ten treatments. Results of the study indicated that the row arrangement by planting density interaction significantly influenced the yield of basil with the maximum dry herbal (341.49 kg.ha<sup>-1</sup>) and essential oil (22.86 kg.ha<sup>-1</sup>) yields were recorded at 100% basil population density with a 1T:2B row arrangements. The cropping system significantly influenced the essential oil content and essential oil yield of basil. The highest essential oil content (1.26%) and essential oil yield (21.83 kg.ha<sup>-1</sup>) of basil were obtained at sole planting compared to that of intercropping (0.96%) and (15.36 kg.ha<sup>-1</sup>) with tomato showing 23.81% and 29.64% reduction, respectively. Therefore, intercropping 100% basil population in tomato by 1T:2B row arrangements could be recommended for Wondo genet and similar agroecology area, based on its better compatibility and productivity.


Agronomy ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 16
Author(s):  
Elena Myagkikh ◽  
Svetlana Babanina ◽  
Alexander Mishnev ◽  
Ludmila Radchenko ◽  
Vladimir Pashtetskiy ◽  
...  

Since the registry of common oregano (Origanum vulgare L.) cultivars does not involve regionalization, a comprehensive study of cultivars bred by different institutions in the intended cultivation region is valuable and relevant. The objective of the research was to assess the possibility of using various indices of ecological adaptability originally developed for grain crops for their use in the most adapted genotypes’ selection (breeding samples and cultivars) of Origanum vulgare L. to the temperate climate of the Crimean Peninsula. The research was carried out in the piedmont zone of Crimea from 2016 to 2019. The study material consisted of breeding samples No. 10 and No. 82 from the collection of FSBSI “Research Institute of Agriculture of Crimea”, as well as cultivars Zima, Raduga, and Slavnitsa selected by the All-Russian Scientific Research Institute of Medicinal and Aromatic Plants (ARSRIMAP). Genotype had the greatest influence on yield of fresh oregano material (43%) with the influence of the weather conditions of the year being 2%. On the contrary, meteorological conditions had a much greater effect on the essential oil accumulation and its areal yield, which were 30% and 25%, respectively. In terms of the coefficient of ecological variation of fresh yield, sample No. 82 and Slavnitsa cultivar were the best (11.47–16.7%). The local genotypes No. 10 and No. 82 varied less by the essential oil content and its yield. The genotype effect value was greater than 0 in the Raduga cultivar and local genotype No. 82 for the yield, but only in No. 82 genotype for the other two characteristics. Cultivars Zima and Raduga were classified as intensive (bi > 1) by the environmental flexibility of fresh yield, while local genotype No. 82 and Slavnitsa cultivar formed the group of intensive ones by essential oil content and essential oil yield. Local genotypes No. 10 and No. 82 were better than the introduced cultivars in terms of essential oil content homeostability and essential oil yield (Hom = 1.91–2.18). Thus, local genotypes proved to be more adapted to the region’s conditions in terms of essential oil accumulation. However, they were inferior to the registered cultivars of ARSRIMAP breeding in terms of fresh yield.


2021 ◽  
Author(s):  
Alexandre Teplaira Boum ◽  
Sylvie Nguikwie Kwanga ◽  
Doriane Tegoundio ◽  
Felix Adje Anoh

Abstract The solid waste of Curcuma longa rhizomes generated after its cold juice process making is mostly unused and discarded even though they can contain essential oil. Conventional techniques such as hydrodistillation can be used to extract essential oil, but this generally results in low essential oil yield and inefficient extraction time. Solid-state fermentation as a pretreatment of distillation could improve the yield of essential oil. In this study, we evaluated the effect of solid state fermentation on the yield of extraction of Curcuma longa solid wastes essential oil. The solid-state fermentation was carried out naturally without any addition of inoculum and the extraction was performed by hydrodistillation. Under experimental conditions at room temperature and anaerobically in the dark, the treatment of 7 days of solid state fermentation followed by 2h of hydrodistillation provided the highest yield of 1.21% as compared to non-fermented of 0.35% and of 0.96% relative to the raw plant material representing an increase of 71% and 21% respectively. A


2021 ◽  
Author(s):  
İrem AYRAN ◽  
Sadiye Ayşe ÇELİK ◽  
Mehmet Muharrem ÖZCAN ◽  
Ayşegül KIRLI ◽  
Özbay DEDE ◽  
...  

Antioxidants ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 1900
Author(s):  
Rabia Shaheen ◽  
Muhammad Asif Hanif ◽  
Shafaq Nisar ◽  
Umer Rashid ◽  
Zubia Sajid ◽  
...  

Indian blackberry (Syzygium cumini L.) is an evergreen tree in the Myrtaceae family. It is used in traditional medicine due to its significant bioactivities and presence of polyphenols with antioxidant activities. The present study describes the effect of seasonal variations on Indian blackberry leaf essential oil yield and chemical composition, production of fractions from essential oil using high vacuum fractional distillation and slow cooling to low temperature (−50 °C) under vacuum, and bioactivities of the essential oil, fractions, and nanoparticles. The results show that Indian blackberry essential oil yield was higher in spring season as compared to winter season. Indian blackberry essential oil fractionation processes were effective in separating and concentrating compounds with desired bioactivities. The bioactivities shown by magnesium nanoparticles were comparatively higher than barium nanoparticles.


Plants ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 2478
Author(s):  
Katalin Patonay ◽  
Helga Szalontai ◽  
Péter Radácsi ◽  
Éva Zámboriné-Németh

Mentha longifolia (L.) L. is the most widespread wild-growing mint species found, and its chemical composition is extremely diverse. We studied the essential oil (EO) yield, composition, and chemotaxonomy of five, northern Hungarian accessions of the species in a cultivation experiment covering two vegetation years at two parallel sites. The long-term goal is to establish the cultivation of this stress-tolerant species in Hungary as a source of flavoring and preservative agents for commercial use. Essential oil yield (1–2 mL/100 g) was observed to be dependent on both the accession and the year. Accession HV1 is assumed to be a new, presumably rare chemotype containing carvacrol (19.28–20.56%), 1,8-cineole (14.87–17.45%), thymol (13.36–13.90%), carvacryl acetate (8.81–10.40%), and para-cymene (7.24–8.01%). Only minor fluctuations occurred in concentrations of these constituents due to habitats and years. A radical change in essential oil composition was observed in accession HV2, as one batch was based on thymol (19.79%) and 1,8-cineole (14.93%), while the others were rich in dihydrocarvone isomers (up to 69%). Although this needs further investigation, it does explain the coexistence of limonene-oxo and γ-terpinene pathways in horsemint. According to the literature, the pathway leading to thymol isomers and/or esters may be rare in the entire Mentha genus. We also demonstrated that known chemotypes of horsemint may differ in variability of their EO composition. Our results also led to the conclusion that any declaration on chemotype needs detailed examination and is not realistic on the basis of a single sample. Assumptions were made about the potential areas of utilization: beside fragrance and flavoring uses of essential oils free from pulegone and menthofurane, thymol-based ones may be used as antioxidative and anti-spoilage agents.


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