Microalgae as food and supplement

Kay, Robert; Barton, Larry L.

doi:10.1080/10408399109527556

Cited by 334 publications

(183 citation statements)

References 45 publications

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“…The last decomposition step (stage III) is mainly attributed to the decomposition of inorganic material (López-González et al, 2014). It can be seen in Table 1 that SP almost has twice as much of ash content than that of CP, which is mainly due to the high alkali metal content in the feedstock (Kay, 1991). Previous studies (Liden et al, 1998;Czernik and Bridgwater, 2004) showed that sodium, potassium, magnesium and silicate in ash significantly affect pyrolysis degradation of biomass material, while potassium, sodium, calcium and magnesium are the main components influencing the combustion process.…”

Section: Combustion Characteristicsmentioning

confidence: 93%

“…Previous studies (Liden et al, 1998;Czernik and Bridgwater, 2004) showed that sodium, potassium, magnesium and silicate in ash significantly affect pyrolysis degradation of biomass material, while potassium, sodium, calcium and magnesium are the main components influencing the combustion process. According to Kay (1991), the content of potassium, sodium, calcium and magnesium of SP is higher than that of CP. The high contents of these metals increase the rate of degradation and as a result, the maximum mass loss rate of SP is higher than that of CP for the stage III.…”

Section: Combustion Characteristicsmentioning

confidence: 99%

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Combustion behavior and kinetics of low-lipid microalgae via thermogravimetric analysis

Gai

Liu

Han

et al. 2015

Bioresource Technology

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h i g h l i g h t sCombustion of low-lipid microalgae C. pyrenoidosa and S. platensis were studied. Chemical functional groups present in two microalgae were investigated via FTIR. Apparent activation energies for combustion of the two microalgae were calculated. C. pyrenoidosa has a higher reactivity compared to S. platensis during combustion. a r t i c l e i n f o t r a c tThermogravimetric analysis and differential thermal analysis were employed to investigate combustion characteristics of two low-lipid microalgae, Chlorella pyrenoidosa (CP) and Spirulina platensis (SP) and isoconversional Starink approach was used to calculate the kinetic parameters in the present study. The results showed that three stages of mass loss, including dehydration, devolatilization and char oxidation, were observed during combustion of both of two low-lipid microalgae. The whole weight loss of combustion of two microalgae was both shifted to higher temperature zones with increased heating rates from 10 to 40 K/min. In the 0.1-0.9 conversion range, the apparent activation energy of CP increased first from 51.96 to 79.53 kJ/mol, then decreased to 55.59 kJ/mol. Finally, it slightly increased to 67.27 kJ/mol. In the case of SP, the apparent activation energy gradually increased from 68.51 to 91.06 kJ/mol.

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Section: Combustion Characteristicsmentioning

confidence: 93%

Section: Combustion Characteristicsmentioning

confidence: 99%

Combustion behavior and kinetics of low-lipid microalgae via thermogravimetric analysis

Gai

Liu

Han

et al. 2015

Bioresource Technology

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“…We also included in our study the cyanobacterium Spirulina maxima, widely cultivated for food and dietary supplements (38). It is worth noting here that the cyanobacteria are photosynthesizing organisms accepted to have given origin to the chloroplasts of green plants through endosymbiontic processes occurring millions of years ago.…”

Section: Discussionmentioning

confidence: 99%

The leaves of green plants as well as a cyanobacterium, a red alga, and fungi contain insulin-like antigens

Silva

Santos

Azevedo

et al. 2002

Braz J Med Biol Res

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We report the detection of insulin-like antigens in a large range of species utilizing a modified ELISA plate assay and Western blotting. We tested the leaves or aerial parts of species of Rhodophyta (red alga), Bryophyta (mosses), Psilophyta (whisk ferns), Lycopodophyta (club mosses), Sphenopsida (horsetails), gymnosperms, and angiosperms, including monocots and dicots. We also studied species of fungi and a cyanobacterium, Spirulina maxima. The wide distribution of insulin-like antigens, which in some cases present the same electrophoretic mobility as bovine insulin, together with results recently published by us on the amino acid sequence of an insulin isolated from the seed coat of jack bean (Canavalia ensiformis) and from the developing fruits of cowpea (Vigna unguiculata), suggests that pathways depending on this hormone have been conserved through evolution.

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“…For centuries people have been using microalgae as a food source; from China where the cyanobacteria Nostoc was used to combat famine, to another cyanobacteria Athrospira (colloquially known as Spirulina) in Chad (Kay and Barton, 1991). Despite this, it is only very, recently (the 1950's) that we began large-scale cultivation and commercial application (Spolaore et al, 2006).…”

Section: Microalgae As Foodmentioning

confidence: 99%

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

Moejes¹,

Moejes²

2017

Afr. J. Biotechnol.

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Microalgae are unicellular photosynthetic organisms that inhabit diverse ecological habitats ranging from freshwater and brackish water to seawater and wastewater. They are also especially equipped to thrive in extreme temperatures and pH conditions. Decades of research have highlighted their potential as sources of biofuels, foods, feeds and high-value bio-actives. However, industrial-scale cultivation of microalgae is still not being carried out to its full potential. This review aims to shed light on the potential of microalgal-derived food, feed and fuel in developing countries and to what extent microalgae could be applied to sustainable development efforts with a special focus on Kenya. The Kenyan government has set out a development policy termed 'Kenya Vision 2030' that aims to transform the nation into a newly industrialised country with a high quality of life for all its people by the year 2030. Here we show that, not only does Kenya lie in an optimal geographical region for microalgal cultivation, but that microalgae has the capability to fulfil some of the 'Kenya Vision 2030' goals.

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Microalgae as food and supplement

Cited by 334 publications

References 45 publications

Combustion behavior and kinetics of low-lipid microalgae via thermogravimetric analysis

Combustion behavior and kinetics of low-lipid microalgae via thermogravimetric analysis

The leaves of green plants as well as a cyanobacterium, a red alga, and fungi contain insulin-like antigens

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

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