Algal bioactive compounds in the cosmeceutical industry: a review

Enigmatic Microalgae from Aeroterrestrial and Extreme Habitats in Cosmetics: The Potential of the Untapped Natural Sources

“…Among natural products used in ingredients for skin protection, carotenoids, which are well-known as strong antioxidants and scavenging agents, have several applications as anti-aging and sunscreen compounds [6,33,39]. More than a single contribution could be attributed to these important compounds, which, besides the solar protection, are used in cosmetics as stabilizers and preservatives [6,40]. In algae, the carotenoids are quite diverse, and some of them are unique for certain species or taxonomic groups and are the group of photosynthetic second in importance and quantity after the most abundant chlorophylls [27].…”

“…Scytonemin is considered as a unique natural product of special interest for formulation of sunscreen products due to its multiple roles as UV sunscreen and as an antioxidant with strong radical-scavenging activity [18,84]. For human use, it was already patented in the USA (for details see [6]). This photoprotective and photostable pigment in its hydrophobic yellow-brown form was isolated from the extracellular mucilage sheaths of some aeroterrestrial (including cryophilic), cave and thermal cyanoprokaryotes of the genera Scytonema, Stigonema, Nostoc, Calothrix, Lyngbya, Rivularia, Chlorogloeopsis and Hyella [18,35,80,[84][85][86][87][88][89][90][91][92].…”

“…Over the years, the term acquired a new meaning, first proposed by Kligman [4]. Currently, there is growing evidence for the consolidation of cosmetics and pharmaceuticals to encompass the biologically active compounds retaining therapeutic value, with increasing use of the term cosmeceuticals in this understanding [5][6][7]. In this rapidly developing branch of cosmetics, the role of natural compounds is emerging in response to the new challenges of the modern market with the basic premise that novel bioactive substances The complexity of algal chemical composition makes microalgae exploitable resources for valuable and novel products, the production of which is cost-effective [2].…”

Influence of Three Diatom Aldehydes against the Dengue Vector <i>Aedes aegypti</i> (Diptera: Culicidae)

“…Besides this, few benthic diatom species have been reported to produce many unique low molecular weight compounds such as the oxo-acids 12-oxo-(5Z,8Z,10E)-dodecatrienoic acid (12-ODTE) (5) and 9-oxo-(5Z,7E)-nonadienoic acid (9-ONDE), which has been identified to inhibit invertebrate embryonic development [19]. Recently, some studies showed that algal bioactive compounds also function in the defense against predators, competitors, and pathogens alike [20] [21]. This way they can also affect ecosystem functioning in the plankton [22].…”

Fine-scale population genetic structure of sugar kelp,Saccharina latissima(Laminariales, Phaeophyceae), in eastern Maine, USA

“…Saccharina latissima has received considerable economic attention in recent years, due to a variety of uses, including in biofuels, bioremediation, feed supplements, and pharmaceutical products (Forbord et al 2012; Marinho et al 2015; Jahan et al 2017). For example, S. latissima and other brown macroalgae contain biologically active phenolic compounds, such as phlorotannins, which are known to exhibit anti-diabetic, anticarcinogenic, and anti-human immunodeficiency virus (HIV) activities (Jormalainen & Honkanen 2004; Thomas & Kim 2011; Cornish et al 2015; Vilg et al 2015).…”