A method was developed for assessing ascorbic acid concentration in commercial fruit juice by cyclic voltammetry the anodic oxidation peak for ascorbic acid occurs at about 490 mv on a pt disc working electrode (versus sce ) the influence of the potential sweep speed on the peak height was studied. The study aimed to compare the nutritional composition of commercial and home -made orange juices with a fruit content of 100%, ie, without dilution with water and without addition of sugars or any other sweeteners orange juice samples (n = 12 for both types of juice) were representative of the french. Abstract studying the magnitude and stability of the ascorbic acid content of commercial orange juices students were interested in ascertaining if orange juice represents a suitable source of vitamin c after one or two weeks in the refrigerator a laboratory experiment for rapid determination of the stability of vitamin c.
Several f&vs contain significant levels of phytochemicals supplying antioxidants, called dietary antioxidants, such as beta‐carotene, vitamin c mango fruits sold in push carts in bangalore were found to have lowest firmness (171 to 296 kg) and tss (1633° brix) as compared to firmness of 425 to 555.
Improving the safety and quality of fresh fruits and vegetables: a training manual for trainers i improving the the relative importance of these hazards can be determined by studying disease surveillance data disease caused by this organism in unpasteurized apple juice demonstrated that it could survive in a.
Dufour, 1996) unfortunately, these processing methods might result in markedly lower content of antioxidants in the end product it was found that antioxidant capacity (orac) of commercial juice concentrate (65 °brix) was only 65% as compared to fresh fruit (12 °brix) (kalt et al 2000) however, skrede.
Class practical measure the vitamin c content of a sample of fruit juice by measuring the volume of the sample required to decolourise a solution of dcpip calibrate the results by comparison with a known concentration of vitamin c.