give four examples of commercially used algae
Answers
- Abrasives : made of diatom ''shells''
- Food additives :made of macroalgae such as seaweeds
- Omega-3 Capsule : made from fish oils extracted from algae
- Fertilizers : made of algae giving phosphate
Algae can be used to make Biodiesel (see algaculture), Bioethanol and biobutanol and by some estimates can produce vastly superior amounts of vegetable oil, compared to terrestrial crops grown for the same purpose.
Algae can be grown to produce hydrogen. In 1939 a German researcher named Hans Gaffron, while working at the University of Chicago, observed that the algae he was studying, Chlamydomonas reinhardtii (a green-algae), would sometimes switch from the production of oxygen to the production of hydrogen.
Algae can be grown to produce biomass, which can be burned to produce heat and electricity.
Chondrus crispus, (probably confused with Mastocarpus stellatus, common name: Irish moss), is also used as "carrageen". It is an excellent stabiliser in milk products - it reacts with the milk protein caesin, other products include: petfoods, toothpaste, ice-creams and lotions etc.,Alginates in creams and lotions are absorbable through the skin