• Korean journal of food and cookery science
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• v.20 no.6 s.84
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• pp.614-618
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• 2004

This study was performed to investigate the nutritional components of yanggeng prepared with different amounts of pumpkin. Three yanggeng products were made, consisting of 87 (sample A), 90 (sample B) and $93\%$ (sample C) pumpkin paste, with the addition of agar, sugar, corn syrup and salt. The amino acids, vitamin E, sugars and mineral contents of the yanggeng were also examined. With regard to the amino acids content of the pumpkin yanggeng those of glutamic and aspartic acid were the highest in all three products. The vitamin E concentration was significantly higher in sample C than those in samples A and B. The glucose and galactose contents were higher in sample C than in samples A and B, whereas the fructose and lactose contents were higher in sample A than in samples A and B. The calcium, magnesium, potassium and sodium contents were higher in sample C than in the other two samples, whereas the zinc and manganese contents were higher in sample A than the other two samples. The potassium content of the pumpkin yanggeng was the highest of the tested minerals.

• Korean journal of food and cookery science
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• v.20 no.2
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• pp.138-143
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• 2004

This study was performed to investigate the quality characteristics of yanggeng prepared with different ratios of pumpkin. Yanggeng was prepared with three concentrations of pumpkin paste, 87% (sample A), 90%(sample B), and 93%(sample C), to which was added agar, sugar, millet jelly and salt. Proximate composition, Hunter's color, texture profile analysis and sensory evaluation of yanggeng were examined. Lightness of pumpkin yanggeng increased with increasing pumpkin content. In the texture profile analysis, the hardness, cohesiveness and springiness of sample A were significantly higher than those of the other products. The gumminess of sample C was the highest, followed in order by A and B. The tendency of the pumpkin yanggeng to fracture increased with decreasing pumpkin content whereas the elasticity decreased. In the sensory evaluation, the color and taste scores of sample B were significantly higher than those of A and C. Also the overall acceptability of sample B was the highest of the three products.