Described herein are methods for generating robust algae strains that can grow under stressful environmental conditions.

A method of producing mineral-rich algae by growing algae with an algae biofilm growing apparatus, wherein the algae is fed a mineral-rich feed stock. Furthermore, the mineral-rich algae is harvested and used as a foodstuff for human and animal consumption.

A method of producing a transformant, which contains using an alga belonging to the genus Nannochloropsis as a host, wherein function of the following protein (A) or (B) of the alga is suppressed, inhibited or deleted: (A) a protein consisting of the amino acid sequence set forth in SEQ ID NO: 50; and (B) a DNA binding protein consisting of an amino acid sequence having 70% or more identity with the amino acid sequence of the protein (A).

The present invention provides a joint method of cultivating microalgae combined with denitrating an industrial waste gas and a system useful for the same. The joint method comprises the steps of: (1) a step of cultivating microalgae; (2) a separation step of separating a microalgae suspension obtained from step (1) into a wet microalgae (microalgae biomass) and a residual cultivation solution; (3) a NOx absorbing/immobilizing step of denitrating an industrial waste gas with the residual cultivation solution obtained from step (2); wherein the nutrient stream absorbed with NOx obtained from step (3) is used to provide nitrogen source to the microalgae cultivation of step (1). During the microalgae cultivation, EM bacteria is added into the microalgae suspension. The microalgae is preferably Chlorella sp., Scenedesmus sp., Monoraphidium sp. or Spirulina sp.

The invention is directed to Haematococcus sp. KAU-01 as well as to a culture medium for Haematococcus sp. KAU-01, and to methods for using this strain to process environmental pollutants such as gases generated by coal-fired plants.

The present application relates to a novel strain of the genus Schizochytrium (Schizochytrium sp.) and a method of producing polyunsaturated fatty acids by using the same. According to one aspect, novel microalgae of the genus Schizochytrium have a high content of fat in biomass, and particularly, a high content of polyunsaturated fatty acids such as docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA), and therefore, the microalgae, and biomass or bio-oil prepared therefrom, may be useful as a feed source or the like.

The present invention relates to a Dunaliella salina OH214 strain having an improved ability to produce pigments, and in particular lutein. As it is possible to produce carotenoid pigments, specifically xanthophylls, with the Dunaliella salina OH214 strain by consuming less energy, it is possible to efficiently produce pigments at an industrial level. In addition, the Dunaliella salina OH214 strain can be applied as a raw material for foods, health functional foods, and pharmaceuticals, containing pigments. Moreover, the Dunaliella salina OH214 strain is a domestic native microalga in Korea and thus does not cause any GMO issues, it is possible to reduce costs by using seawater as a culture medium in Korea, and the effect of related industrial development can be expected.

A method and a device for adherent culture of microalgae in a thin liquid layer by mobile mechanical stirring, comprising: a subsystem for adherent culture of microalgae in thin liquid layer, for adherent culture of microalgae in a culture solution, comprising a microalgae liquid pool and a culture plate used as a base plate for microalgae seed inoculation, adherent culture, microalgae harvesting, the microalgae liquid pool containing culture solution having a water layer with a depth in a range of 1{tilde over ()}5 cm, forming a thin liquid layer; and a subsystem for mechanical stirring, comprising a mechanical stirring assembly, a moving assembly, a track member, a power drive assembly, a control assembly, the moving assembly moving on the track member to drive the mechanical stirring assembly to stir and suspend the microalgae, the microalgae standing and gradually settling to the bottom after stirring, realizing adherent culture in suspension and settlement cycle.

Culturing S. glucoliberatum PABB004 under conditions effective for the S. glucoliberatum PABB004 to secrete simple sugars into culture medium. In one or more embodiments, the conditions include a pH of 6.0 to 8.5. In some cases, the culture can include a second organism. A co-culture includes S. glucoliberatum PABB004 and a second organism, wherein the co-culture has a pH of 6.0 or greater. In one or more embodiments, the second organism is selected to produce a product of interest such as, for example, ethanol.

The present invention is directed to isolated thraustochytrid microorganisms as well as strains and mutants thereof. The invention is further directed to biomasses, microbial oils, compositions, cultures, methods of producing microbial oils, and methods of using the isolated thraustochytrids, biomasses, and microbial oils.