Biomass Nutrient Profiles of the Microalga Phaeodactylum Tricornutum

Abstract

The microalga Phaeodactylum tricomutum was cultured under various conditions in an external tubular photobioreactor and in a bubble column. The proximate composition (moisture, ash, crude protein, available carbohydrates, fiber, lipids and energy), nitrate, nucleic acids, mineral elements (Na, K, Ca, Mg, Fe, Cu, Zn, Mn, P, S, As, Pb, Cd), C/N ratio, fatty acids and pigments (total carotenoids, carotenoid class and chlorophylls) were analyzed. On average, the biomass contained 36.4% crude protein, 26.1 % available carbohydrates, 18.0% lipids, 15.9% ash and 0.25% neutral detergentfiber, on a diy wt basis. The mineral element contents in 100 g diy biomass were: Ca (1 91 0 mg), K (I 720 mg), Na (1430 mg), S (1050 mg), Mg (555 mg), Zn (373 mg), (Mn 31.4 mg), Cu (8.4 ma), and P (269 mg). Toxic heavy metal contents were negligible. The fat@ acid content was (onpercent diy wt): 0.65% in 14:0;1.28% in 16:O; 1.48% in 1 6 : 1~7 ; 0.34% in 16:2&; 0.75% in 16:3& and 2.50% in 2 0 : 5~3 . Nutrient composition of biomass was highly influenced by means of the residence time in the culture bioreactor and the external irradiance. The biomass produced at low external irradiance was richer in protein and eicosapentaenoic acid. Journal of Food Biochemisby 25 (2001) 57-76. AN Rights Reserved. "Copyright by Food & Nutrition Press, Inc.. Trumbull, Connecticut 0661 1. 57 58 M.M. REBOLLOSO-FUENTES ETAL.

Algae for Africa: Microalgae as a source of food, feed and fuel in Kenya

“…The pennate marine diatom Phaeodactylum tricornutum has the ability to produce the poly-unsaturated fatty acids (PUFA) eicosapentaenoic acid (EPA; 20:5n-3) and docosahexaenoic acid (DHA; 22:6n-3) in high proportions of the total fatty acid content (Fajardo et al, 2007;Siron et al, 1989;Rebolloso-Fuentes et al, 2001). Marinederived EPA and DHA, colloquially known as omega-3 PUFAs, are important in human nutrition with health benefits such as reduced cardiovascular morbidity and mortality, reduced risk of premature births and improved cognitive and behavioural development of the foetus, as well as benefiting patients with atherosclerosis, hypertension, and neurological and neuropsychiatric A B diseases (Yashodhara et al, 2009).…”

Dynamics of the Bacterial Community Associated with Phaeodactylum tricornutum Cultures

“…Novel applications also include the use of microalgae as an alternative sustainable development tool [2]. One such microalgae is the pennate diatom Phaeodactylum tricornutum that is able to synthesize a number of industrially relevant molecules applicable in: aquaculture as feed in e.g., bivalve, echinoderm, crustacean and fish hatcheries [3,4]; as biomass for biofuels [5,6]; pharmaceuticals and nutraceuticals [5,[7][8][9]; and nanotechnology [10], and bioremediation industries [11]. To fully exploit the industrial potential of microalgal-derived products, substantial quantities of microalgal biomass is required, peer-reviewed literature we defined the most likely functional roles of the bacterial factions and constructed a putative interaction network.…”

Evaluation of Anti-inflammatory Activities and Mechanisms of Microalga Phaeodactylum tricornutum

“…The nutritional composition of the microalgal biomass is influenced by the culture conditions, mainly the residence time in the photobioreactor and the external irradiance intensity (Rebolloso-Fuentes et al, 2001). Generally, microalgae derived carotenoid is known as antioxidants.…”

“…The microalga PT is potentially useful as a human dietary supplement (Rebolloso-Fuentes et al, 2001). The nutritional composition of the microalgal biomass is influenced by the culture conditions, mainly the residence time in the photobioreactor and the external irradiance intensity (Rebolloso-Fuentes et al, 2001).…”