Effect of Blanching Treatments on Vitamin C Content. Variation of vitamin C present in the extract after blanching of the carrot at selected temperatures is shown in Fig. 5. Vitamin C content was maximum in 0.05 N acetic acid solution blanching treatment at 90–95C for 5 min followed by water blanching.Though vitamin C retention was found to be maximum in the case of 0.05 N acetic acid solution, the yield of carrot juice and theb-carotene
retention were maximum in the case of water blanching at 95C for 5 min. Therefore, among the three different blanching treatments, blanching in water (95C for 5 min) was inferred to be better and selected for enzyme inactivation studies.