Abstract: A method of detecting a nucleic acid including a) mixing a solution containing a carboxylic acid and/or a salt thereof, a cerium oxide support and a sample containing a nucleic acid to adsorb said nucleic acid to said cerium oxide support, b) separating said cerium oxide support on which said nucleic acid was adsorbed from the mixture obtained in a), c) collecting said nucleic acid by adding an eluent to said cerium oxide support on which said nucleic acid was adsorbed and separated in b), and d) detecting said nucleic acid collected in c) by a hybridization reaction or a nucleic acid amplification reaction.

Abstract: A method of collecting a nucleic acid(s) from a biological sample includes step a) mixing an aluminum oxide support with a water-soluble neutral polymer adsorbed on a surface thereof and a solution containing a nucleic acid(s), thereby adsorbing the nucleic acid(s) to the support; step b) separating the support on which the nucleic acid(s) is/are adsorbed from the solution mixed in step a); and step c) collecting the nucleic acid(s) by adding an eluent to the support on which the nucleic acid(s) is/are adsorbed and which is separated in step b).

Abstract: A method of producing ethanol includes: a continuous ethanol fermentation step including culturing a microorganism with a fermentation feedstock containing cane molasses as a main component, filtering the resulting culture liquid through a separation membrane to recover a filtrate containing the ethanol and from which the microorganism has been removed; retaining or returning an unfiltered liquid containing the microorganism, in or to the culture liquid; and adding an additional fermentation feedstock to the culture liquid, and an ethanol concentration and purification step including distilling the filtrate collected in the continuous ethanol fermentation step and contains the ethanol, wherein the microorganism causes a centrifugal supernatant of the culture liquid to contain particles having an average particle diameter of 100 nm or more, and particles formed by the microorganism culture and contained in the filtrate containing ethanol have an average particle diameter of 40 to 80 nm.

Abstract: A method of detecting a nucleic acid including a) mixing a solution containing a carboxylic acid and/or a salt thereof, a cerium oxide support and a sample containing a nucleic acid to adsorb said nucleic acid to said cerium oxide support, b) separating said cerium oxide support on which said nucleic acid was adsorbed from the mixture obtained in a), c) collecting said nucleic acid by adding an eluent to said cerium oxide support on which said nucleic acid was adsorbed and separated in b), and d) detecting said nucleic acid collected in c) by a hybridization reaction or a nucleic acid amplification reaction.

Abstract: A method collects a nucleic acid from a biological sample and includes the steps of: a) mixing a support including a water-soluble neutral polymer adsorbed on a cerium oxide surface thereof with a solution containing a nucleic acid to adsorb the nucleic acid to the support; b) separating the support on which the nucleic acid was adsorbed from the solution mixed in step a); and c) collecting the nucleic acid by adding an eluent to the support on which the nucleic acid was adsorbed and which is separated in step b).

Abstract: A method of collecting a nucleic acid(s) from a biological sample includes step a) mixing an aluminum oxide support with a water-soluble neutral polymer adsorbed on a surface thereof and a solution containing a nucleic acid(s), thereby adsorbing the nucleic acid(s) to the support; step b) separating the support on which the nucleic acid(s) is/are adsorbed from the solution mixed in step a); and step c) collecting the nucleic acid(s) by adding an eluent to the support on which the nucleic acid(s) is/are adsorbed and which is separated in step b).