The colour parameter change in FBS at different blanching time is presented in Table 1. Significant changes (P < 0.05) were observed in L*, a* and b* values of blanched BSS compared with the FBS samples, suggesting that the colour of BSS was significantly affected by blanching. After the blanching treatment, L* of BSS decreased significantly (P < 0.05), representing the lightness of BSS reduced during blanching. The lightness decreased to the lowest level (62.81) at 15 min. Meanwhile, a* also decreased significantly (P < 0.05), which reduced to the lowest value ( 7.27) at 12 min, indicating that greenness degree of BSS increased during blanching. However, b* of BSS increased significantly (P < 0.05), which increased to the highest value (24.15) at 12 min, suggesting that the BSS will be yellowing during blanching. Such colour change may be related with the carotenoids degradation caused by blanching treatment (Goncalves et al., 2007). When samples of different blanching time were compared, although only insignificant difference (P > 0.05) was observed in L* between sample of 3-min blanching and that of 6-min blanching, significant difference (P < 0.05) was detected in L* between sample of 6-min blanching and that of after 9-min blanching treatment. No significant difference (P > 0.05) was observed in a* among all blanching groups. However, significant difference was detected in b*, producing insignificant difference (P > 0.05) during the first 9-min blanching but significant difference (P < 0.05) among all sample groups after then.