Chemical defense of brown algae (Dictyopteris spp.) against the herbivorous amphipod Ampithoe longimana

Oecologia ◽  
2001 ◽  
Vol 126 (4) ◽  
pp. 515-521 ◽  
Author(s):  
Iris Schnitzler ◽  
Georg Pohnert ◽  
Mark Hay ◽  
Wilhelm Boland
Keyword(s):  
Chemical Defense ◽  
Brown Algae ◽  
Ampithoe Longimana

scholarly journals Diterpenes From the Marine Brown Algae of the Genus Dilophus

2020 ◽  
Vol 15 (2) ◽  
pp. 1934578X2090778
Author(s):  
Xue Xia ◽  
Bo Li ◽  
Yuqin Hou ◽  
Jinrong Zhang ◽  
Xiaojun Yan
Keyword(s):  
Secondary Metabolites ◽  
Chemical Defense ◽  
Brown Algae ◽  
Biological Activities ◽  
Biologically Active ◽  
Feeding Deterrent ◽  
Present Review ◽  
Marine Brown Algae ◽  
Made In

Brown algae of the genus Dilophus contain plenty of biologically active secondary metabolites with diverse structures. Excellent progress has been made in the discovery of diterpenes with extensive chemical defense activity from this genus. Most of these diterpenes exhibit significant biological activities, such as antifungal, cytotoxic, and feeding-deterrent activities. In the present review, we summarized diterpenes isolated from the brown algae of the genus Dilophus.

Pyrolysis of brown algae (Bifurcaria Bifurcata) in a stainless steel tubular reactor: From a review to a case study

2018 ◽  
Vol 14 (1) ◽  
pp. 31-60 ◽  
Author(s):  
M. Y. Guida ◽  
F. E. Laghchioua ◽  
A. Hannioui
Keyword(s):  
Particle Size ◽  
Stainless Steel ◽  
Flow Rate ◽  
Brown Algae ◽  
Tubular Reactor ◽  
Nitrogen Flow ◽  
Nitrogen Flow Rate ◽  
Bifurcaria Bifurcata ◽  
Bio Oil

This article deals with fast pyrolysis of brown algae, such as Bifurcaria Bifurcata at the range of temperature 300–800 °C in a stainless steel tubular reactor. After a literature review on algae and its importance in renewable sector, a case study was done on pyrolysis of brown algae especially, Bifurcaria Bifurcata. The aim was to experimentally investigate how the temperature, the particle size, the nitrogen flow rate (N2) and the heating rate affect bio-oil, bio-char and gaseous products. These parameters were varied in the ranges of 5–50 °C/min, below 0.2–1 mm and 20–200 mL. min–1, respectively. The maximum bio-oil yield of 41.3wt% was obtained at a pyrolysis temperature of 600 °C, particle size between 0.2–0.5 mm, nitrogen flow rate (N2) of 100 mL. min–1 and heating rate of 5 °C/min. Liquid product obtained under the most suitable and optimal condition was characterized by elemental analysis, 1H-NMR, FT-IR and GC-MS. The analysis of bio-oil showed that bio-oil from Bifurcaria Bifurcata could be a potential source of renewable fuel production and value added chemicals.

A Nine-Size System for Chemical Defense Gloves

1986 ◽  
Author(s):  
Kathleen M. Robinette ◽  
James F. Annis
Keyword(s):  
Chemical Defense
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