Carrageenan is that the carrageenan is first dissolved and filtered to remove cell wall debris. The carrageenan is then precipitated from the clear solution either by isopropanol or by potassium chloride. A hybrid technology in which seaweed is treated heterogeneously as in the semirefined process exists, but alcohol or high salt levels are used to inhibit dissolution. This process is often used on South American seaweeds and gives some of the cost benefits of semirefined processing, while allowing a wider range of seaweeds to be processed, however, the naturally low cellulose levels in some South American seaweeds allow them to be
Substance 1987 (2004) that the album is "pure pleasure" and serves as "a guidebook to 1980s pop", along with Prince's "Purple Rain" (1984) and Madonna's 1990 compilation "The Immaculate Collection". "Slant Magazine"'s Sal Cinquemani was less enthusiastic and said that the album is "undeniably a product of its time". In 2005, Will Hermes included "Substance" in his "definitive guide" to dance-rock for "Spin" magazine. Substance 1989 is the video version of "Substance" that first appeared in 1989 on VHS; it was released on LaserDisc in Japan in 1991. The cover is similar to the LP, except "1987" is replaced by "1989" (though