“…The authors subsequently determined the crocin, picrocrocin, and safranal contents of the extract, following the ISO 3632 guidelines. Under these conditions, the absorbances for crocin, picrocrocin, and safranal were 423.9, 49.51, and 133.1, respectively, as compared to 125.4, 24.99, and 67.18, respectively, for distilled water, which was the control, suggesting a much higher concentration in the 50% aqueous ethanol extract [ 94 ]. Generally, conventional extraction methods, which include Soxhlet extraction, vapor or hydrodistillation and maceration or solvent extraction, use huge amounts of organic hazardous solvents, are not selective, have long extraction times, and in some cases extirpate thermolabile/heat sensitive compounds.…”