Sapodilla staining with natural dyes extracted from curcumin and roselle to replace a synthetic dye
Apita Bunsiri, Charoen Kunprom, Somnuk Thongbor, Yupin Onsiri and Phitsanu Bunsiril
Agricultural Science Journal, Vol. 38 No.5 (Suppl.) 2007. p 41-44.
2007
บทคัดย่อ
Four dyes: synthetic dye, curcumin-extracted dye, roselle-extracted dye and mixed dye between curcumin- and roselle-extracted dyes were used to stain sapodilla fruit.The results showed that L, a,b,C and oH of sapodilla stained with synthetic dyes were not different from those stained with curucmin-extracted dye.There were no significantly differences of TSS, TA, TSS/TA, pulp score, sweetness score, astringency score, softening score, off-flavor score, tasting preference score, defect score and bruising score in all treatments.It was found that glossy score of sapodilla stained with synthetic, curcumin-extracted and mixed dyes evaluated by consumers was not significantly different.However, sapodilla stained with curcumin-extracted dye tended to have the highest glossy score.The beautiful and characteristic preference scores of unstained sapodilla were not different from those of fruit stained with curcumin-extracted and mixed dyes but higher than those of fruit stained with roselle-extracted dye.After gardeners evaluation, the results revealed that sapodilla stained with synthetic dye was not significantly different from those stained with curcumin-extracted dye, but higher than those unstained and stained with mixed and roselle-extracted dyes.