scholarly journals Seasonal variation of fatty and essential oil in terebinth (Pistacia terebinthus L.) fruit

2021 ◽  
Vol 49 (1) ◽  
pp. 12171
Author(s):  
Memet INAN

A member of Anacardiaceae family, terebinth (Pistacia terebinthus L.) is a perennial tree that is evergreen. Terebinth is spread on a very wide area in Turkey, from the Mediterranean costs to South-Eastern Anatolia. In the present study, to determine seasonal variation of fatty oil and essential oil in terebinth fruits, harvests were made when the fruit colour was Green (GF), Red (RF), Red-Black (RBF) and Black (BF). Upon ripening, fatty oil rate in the fruit raised from 13.40% to 37.08%, while essential oil rate reduced from 0.116% to 0.082%. In all growth periods, oleic, linoleic and palmitic acids made-up the main composition of the oil, and through growth there was increase in the amounts of oleic and palmitic oil acids while a decrease was reported in linoleic acid rate. In terms of essential oil compounds, α- pinene, limonene, p-cymen-8-ol and p-anisaldehyde composed the main compounds, the highest α- pinene rate was observed during BF period as 37.23%, the highest limonene rate was observed during RBF period as 22.01%, while the highest p-cymen-8-ol and panisaldehyde rates have been observed during the GF harvest period by 11.29% and 7.25%, respectively. In conclusion is that the fruit should be harvested during the black fruit colour, when the fruit is fully ripened, in order to get a good quality fruit and aroma and people picking the fruit from nature should be trained about this.

Planta Medica ◽  
2020 ◽  
Vol 86 (08) ◽  
pp. 520-537 ◽  
Author(s):  
Jürgen Reichling

AbstractPathogenic biofilm-associated bacteria that adhere to biological or nonbiological surfaces are a big challenge to the healthcare and food industries. Antibiotics or disinfectants often fail in an attempt to eliminate biofilms from those surfaces. Based on selected experimental research, this review deals with the potential biofilm-inhibiting, virulence factor-reducing, and biofilm-eradicating activities of essential oils and single essential oil compounds using Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, and Chromobacterium violaceum as model organisms. In addition, for the bacteria reviewed in this overview, different essential oils and essential oil compounds were reported to be able to modulate the expression of genes that are involved in the formation of autoinducer molecules, biofilms, and virulence factors. The anti-quorum sensing activity of some essential oils and single essential oil compounds was demonstrated using the gram-negative bacterium C. violaceum. Reporter strains of this bacterium produce the violet-colored compound violacein whose synthesis is regulated by quorum sensing autoinducer molecules called acylhomeserinlactones. Of great interest was the discovery that enantiomeric monoterpenes affected the quorum sensing regulation system in different ways. While the (+)-enantiomers of carvone, limonene, and borneol increased violacein formation, their (−)-analogues inhibited violacein production.For the successful eradication of biofilms and the bacteria living inside them, it is absolutely necessary that the lipophilic volatile substances can penetrate into the aqueous channels of biofilms. As shown in recent work, hydrophilic nano-delivery systems encapsulating essential oils/essential oil compounds with antibacterial effects may contribute to overcome this problem.


2017 ◽  
Vol 92 (4) ◽  
pp. 274-282 ◽  
Author(s):  
I Keskin ◽  
Y Gunal ◽  
S Ayla ◽  
B Kolbasi ◽  
A Sakul ◽  
...  

1997 ◽  
Vol 11 (1) ◽  
pp. 78-79 ◽  
Author(s):  
Zelâl Bircan ◽  
Mehmet Kervancioğlu ◽  
Mustafa Soran ◽  
Gülfiliz Gönlüsen ◽  
Ilhan Tuncer

2002 ◽  
Vol 17 (3) ◽  
pp. 175-180 ◽  
Author(s):  
Johannes Novak ◽  
Jan Langbehn ◽  
Friedrich Pank ◽  
Chlodwig M. Franz

1999 ◽  
Vol 11 (5) ◽  
pp. 619-622 ◽  
Author(s):  
Amaia Ariño ◽  
Inés Arberas ◽  
Gustavo Renobales ◽  
Silvia Arriaga ◽  
Juan B. Domínguez

2000 ◽  
Vol 55 (5) ◽  
pp. 397-401 ◽  
Author(s):  
Isabel Pérez ◽  
Maria Amparo Blázquez ◽  
Herminio Boira

2002 ◽  
Vol 50 (1) ◽  
pp. 147-153 ◽  
Author(s):  
Stavroula A. Vekiari ◽  
Eftihios E. Protopapadakis ◽  
Parthena Papadopoulou ◽  
Dimitrios Papanicolaou ◽  
Christina Panou ◽  
...  

2019 ◽  
Vol 112 (5) ◽  
pp. 2167-2176 ◽  
Author(s):  
Torranis Ruttanaphan ◽  
Wanchai Pluempanupat ◽  
Chutikan Aungsirisawat ◽  
Polnarong Boonyarit ◽  
Gaelle Le Goff ◽  
...  

Abstract Essential oils are well known to act as biopesticides. This research evaluated the acute toxicity and synergistic effect of essential oil compounds in combination with cypermethrin against Spodoptera litura Fabricius (Lepidoptera: Noctuidae). The effects of distillation extracts of essential oils from Alpinia galanga Zingiberaceae (Zingiberales) rhizomes and Ocimum basilicum Lamiaceae (Lamiales) leaves; one of their primary essential oil compounds 1,8-cineole; and linalool were studied on second-instar S. litura by topical application under laboratory conditions. The results showed that A. galanga had the highest control efficiency, whereas1,8-cineole provided a moderate efficacy. The mixtures of linalool, 1,8-cineole, O. basilicum, or A. galanga with cypermethrin were synergistic on mortality. Activity measurements of the main detoxification enzymes show that linalool and 1,8-cineole inhibit the activity of cytochromes P450 and carboxylesterases, which could explain their synergistic effect. Based on our results, the use of these mixtures represents an ideal eco-friendly approach, helping to manage cypermethrin resistance of S. litura.


Sign in / Sign up

Export Citation Format

Share Document