Canned Corn Beverage from Sweet Corn Kernel and Its Cob

Abstract

Six formulae (formula 1 - 6) of corn beverages were prepared from sweet corn kernel and cob water extract in the ratio of 1:3, 1:5, 1:7, 1:9, 1:11, and 1:13 by weight, respectively and the cane sugar was added in each formula of corn beverage to improve the taste (total soluble solid of each sample was 13° Brix) and made into canned corn beverage (20 oz lacquer can). It was shown that canned corn beverage formula 1, 2, and 3 were accepted by taste panelists in term of color, flavor, texture and acceptability compared with the rest of samples (p < 0.05). The accepted sample formula 3 was made in to canned corn-milk beverage (20 oz lacquer can) formula 7 - 11 by adding 2, 4, 6, 8, and 10% by weight of whole milk powder, respectively and the cane sugar was added in each formula to improve the taste (total soluble solid of each sample was 13° Brix). It was found that canned corn-milk beverage formula 7, 8, and 9 were preferred by the taste panelists when compared to the others (p < 0.05). The processing time at 121.1° C or 250° F (initial temperature at 65° C or 149° F) of the corn beverage formula 3 packed in lacquer can size 5.5 oz, 15.0 oz, and 20.0 oz were 15, 20, and 20 minutes with F_o value of 6.7, 7.2, and 6.6 minutes, respectively, while that of cornmilk beverage formula 8 were 15, 20, and 20 minutes with F_o value of 6.1, 6.7, and 5.9 minutes, respectively. The protein and fat contents of canned corn-milk beverage formula 8 were 9.30 and 1.10% on dried weight basis while that of canned corn beverage formula 3 were only 3.22 and 0.14% on dried weight basis, respectively. The vitamin A, B₁, B₂, and niacin content of the accepted canned corn-milk beverage formula 8 were increased in the range of 1.09-1.81 times and the vitamin C and inositol were reduced to 0.82 and 0.89 time, respectively. The calcium, phosphorus, potassium, and iron were increased in the range of 1.84-10.80 times when compared to the canned corn beverage formula 3. The protein quality of the accepted canned corn-milk beverage formula 8 showed higher chemical score of lysine and tryptophan at 113 and 140% as compared to 53 and 60% of the canned corn beverage formula 3.