Additional analysis of chemical diversity of the red algal genus Laurencia (Rhodomelaceae) from Japan

Masuda, Michio; Kawaguchi, Shigeo; Abe, Tsuyoshi; Kawamoto, Tomotake; Suzuki, Minoru

doi:10.1046/j.1440-1835.2002.00267.x

Cited by 8 publications

(5 citation statements)

References 37 publications

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“…These results differ from other findings, where lower concentrations of polyphenols were found in red algae in comparison to brown algae (Jiménez-Escrig et al, 2001. Given that the Folin-Ciocalteu's reagent can also detect oxidizable (i.e., compounds with high reducing potential) other than polyphenols (Singleton et al, 1999), it is possible that we detected other phyto-constituents in the L. chilensis dichloromethane extract (e.g., sesquiterpenes have also been described for the genus Laurencia) (Masuda et al, 2002;Kladi et al, 2005).…”

Section: Discussioncontrasting

confidence: 99%

Antioxidant and anti cancer activities of brown and red seaweed extracts from Chilean coasts

Miranda-Delgado¹,

Montoya²,

Paz-Araos³

et al. 2018

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Laurencia chilensis and Chondracanthus chamissoi. The antioxidant capacity of these extracts was evaluated through three complementary assays: the TRAP, FRAP, and DPPH assays. Additionally, the cytotoxic activity of these extracts was determined through sulforhodamine B assays on two cancer cell lines, one colon (HT-29) and one breast (MCF-7), and one non-tumor control group of epithelial colon cells (CoN). The greatest antioxidant activity was detected in the ethyl acetate and dichloromethane extracts from L. chilensis in its TRAP potential, ethyl acetate of D. kunthii in its FRAP potential, and finally D. ligulata in its DPPH radical scavenging activity. The activities of this D. ligulata and L. chilensis extracts were significantly correlated with their flavonoid contents. In addition, the dichloromethane extracts from D. kunthii and C. chamissoi showed strong cytotoxic activity against HT-29 and MCF-7; however, the activity was not selective. Future research is necessary to purify the bioactive compounds of interest and improve their selectivity for eventual therapeutic use.

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Section: Discussioncontrasting

confidence: 99%

Antioxidant and anti cancer activities of brown and red seaweed extracts from Chilean coasts

Miranda-Delgado¹,

Montoya²,

Paz-Araos³

et al. 2018

lajar

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“…Both the 1 H and 13 C NMR spectroscopic data were identical to those previously reported [13]. Allolaurinterol (3) has also been isolated from other algae including L. subopposita [36], L. majuscula [37] and L. obtusa [38], and the sea hare Aplysia dactylomela [39], as well as having been synthesized [40].…”

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confidence: 67%

Laurencia Filiformis: Phytochemical Profiling by Conventional and HPLC-NMR Approaches

Dias

White

Urban

2009

Natural Product Communications

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Chemical investigation of the southern Australian marine alga Laurencia filiformis forma heteroclada resulted in the isolation of two new compounds, cycloisoallolaurinterol (16) and isoallolaurinterol (23), along with the previously reported sesquiterpenes filiformin (1), filiforminol (2), allolaurinterol (3) and bromolaurenisol (10). All structures were secured by detailed spectroscopic analysis since no previous 2D NMR studies had been described for compounds 1, 2 and 10. As a result of this study, the first single X-ray diffraction study for 1 was secured. The investigation of the chemical conversion of allolaurinterol (3) to filiformin (1) was monitored by on-flow HPLC-NMR, which also resulted in the identification of 23. We propose that both compounds 16 and 23 are formed as artefacts from allolaurinterol (3). HPLC-NMR was used to profile the crude extract of a marine organism, as well as for monitoring on-line compound chemical conversions. Both on-flow and stop-flow HPLC-NMR were successfully applied in the chemical profiling and compound chemical conversion studies of L. filiformis forma heteroclada. Compounds 2 and 3 displayed antimicrobial activities.

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“…Pterocladia capillacea, [37] Odonthalia corymbifera, [38] Rhodomela confervoides, [39] Jania rubens [40] Laurencia sp., [41] Callophycus serratus [42] Porphyra sp. [43] Tichocarpus crinitus [44] Phaeophyceae Phlorotannins Bromophenols Meroditerpenoids Colpol…”

Section: Rhodophyceae Bromophenols Terpenoids Maas (A) Tichocarpolsmentioning

confidence: 99%

Untitled

2022

Madridge J Food Technol.

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Algae are organisms that can survive in a wide range of environments, usually in aquatic situations. They have the ability to photosynthesize and reproduce rapidly. The plant and algae have similar in physiological properties but different in cellular structure and reproduction. Algae are photosynthetic organisms with great diversity in size and form, ranging from unicellular microscopic organisms (microalgae) to large multicellular forms (macroalgae). Algae can be a very interesting natural source of new compounds with biological activity that could be used as functional ingredients [1]. Algae are biological compound which can be applied as functional ingredients.

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Additional analysis of chemical diversity of the red algal genus Laurencia (Rhodomelaceae) from Japan

Cited by 8 publications

References 37 publications

Antioxidant and anti cancer activities of brown and red seaweed extracts from Chilean coasts

Antioxidant and anti cancer activities of brown and red seaweed extracts from Chilean coasts

Laurencia Filiformis: Phytochemical Profiling by Conventional and HPLC-NMR Approaches

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