• Journal of the Korean Society of Food Science and Nutrition
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• v.42 no.8
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• pp.1175-1182
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• 2013

The purpose of this study was to evaluate the functional characteristics of fermented mixed grain beverages obtained using different microbial species and to evaluate their suitability for consumption. Various fermented mixed grain beverages were prepared through fermentation with Aspergillus (A.) oryzae CF1003 (A), A. acidus KACC46420 (B), Rhizopus (R.) delemar KACC46149 (C), R. oryzae KACC45714 (D), R. oryzae KACC46148 (E), A-E mixed strains (F), A. oryzae CF1001 (G), A. acidus CF1005 (H) and A+H mixed strains (I). The visual appearance, flavor, taste, and the antioxidant capacity of each fermented beverage were then assessed. The chromaticity and aesthetic quality of the fermented beverage was measured and all fermented beverages appeared yellow. The C-, G-, H- and I-fermented beverages received scores of 3.319, 3.206, 3.170 and 3.025 points, respectively, following a sensory evaluation, while the others received less than 3 points. The polyphenol content of the different beverages were similar, while the flavonoid content significantly differed. In particular, the flavonoid content of the C- and E-fermented beverages was significantly higher than other beverages. Although the electron donating ability and reducing power of the fermented beverages was very low, the superoxide dismutase (SOD)-like activity of all beverages (except the E-fermented beverage) increased in a concentration-dependent manner. Specifically, the SOD-like activity from the F-fermented beverage at 10,000 ppm was more than 50%. Interestingly, the antioxidant activities of the beverages were unrelated to their polyphenol or flavonoid levels. This study also found that the aesthetic qualities of G- and H-fermented beverages were the highest and that this was completely independent of their antioxidant capacity. Therefore, our results suggest that further studies are required to develop mixed grain-derived fermented beverages that can also fulfill a useful functional purpose.

• Journal of the Korean Society of Food Science and Nutrition
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• v.44 no.5
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• pp.784-789
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• 2015

This study investigated the quality of muffins prepared with various concentrations of wheat sprout powder. Muffins were prepared by adding 0, 1, 3, 5, and 7% wheat sprout powder to flour of the basic formulation. The weight of muffins increased upon addition of 3~5% wheat sprout powder. Height and volume index of the muffins containing 1~5% wheat sprout powder were higher than those of the control. The pH, lightness, and redness of muffins decreased with 3~5% wheat sprout powder, whereas yellowness and moisture contents increased. The hardness of muffins increased upon addition of wheat sprout powder, but there was no significant difference among the sample groups. The total polyphenol contents and antioxidative activity as measured by 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity of muffins increased as the concentration of wheat sprout powder increased. Muffins containing 1~5% wheat sprout powder showed acceptable sensory properties, including color, flavor, taste, and overall acceptability. Results indicate that the optimal concentration of wheat sprout powder in the muffin formula was 3~5% (w/w).

• Korean journal of food and cookery science
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• v.26 no.6
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• pp.866-871
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• 2010

The antioxidant activities and quality characteristics of jams containing maltitol substituted for sucrose(sucrose, maltitol syrup(MT), and MTS(sucrose 50%+MT 50%)) were evaluated. The endpoint of jam preparation was determined to be 64 $^{\circ}Brix$. The pH was the highest in MTS among all treatments. The reducing sugar content and viscosity were the highest in MT, and second highest in MTS. Lightness(L value) of Hunter color system was the highest in MT, whereas yellowness(b value) was the highest in MTS. Hardness and cohesiveness of textural properties were the highest in MT. Antioxidant activities were the highest in MT, which also had the lowest $IC_{50}$ values(49.63 mg/g for DPPH and 27.24 mg/g for hydroxyl radical scavenging activity). Total phenol content was highest in MT among all treatments. Flavor and overall acceptance scores of MTS were the highest among all treatments. Based on these results, it was suggested that half-substitution of sucrose with maltitol is the most appropriate for attaining favorable physicochemical and antioxidative properties during black garlic jam preparation.

• Journal of the East Asian Society of Dietary Life
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• v.20 no.6
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• pp.916-922
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• 2010

The quality characteristics and antioxidant activities were evaluated for jams containing fructooligosaccharide (FTO) and FTOS (sucrose 50%+FTO 50%) substituted for sucrose. The endpoint of jam preparation was determined to be sweetness of $64^{\circ}Brix$. Moisture contents differed among the treatments, whereas acidity did not. Reducing sugar content and viscosity were highest in the FTO (0.144%, 126,800 cP), and the lowest in control (0.074%, 101,600 cP). Lightness (L value), redness (a value), and yellowness (b value) values of the Hunter color system were highest in the FTO sample. Hardness and springiness of textural properties were the highest in the FTO sample as well. Antioxidant activities were the highest in the FTO sample with the lowest $IC_50$ values (42.3 mg/g for DPPH and 22.4 mg/g for hydroxyl radical scavenging activities). Total phenolic content was the highest in the FTO sample among all treatments. The overall acceptance score of black garlic jam containing FTO was the highest. Based on these results, it is suggested that FTO was appropriate for achieving good qualities such as antioxidative activity in black garlic jam.

• Culinary science and hospitality research
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• v.18 no.5
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• pp.243-255
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• 2012

This research has been conducted to develop the best recipe for brown sauce containing freeze-dried Salicornia powder. For this purpose, we made brown sauces with different contents of freeze-dried Salicornia powder and performed physico-chemical characteristic and sensory test. The highest salinity of freeze-dried Salicornia powder was 0.15% when 1% freeze-dried Salicornia powder was added to distilled water, SP1. The highest brightness of brown sauce was achieved with 1.2% freeze-dried Salicornia powder and was 45.29 with BSP12. More powder led to significant increases of the samples(p<0.001) in salinity and brightness. DPPH radical scavenging increased with greater freeze-dried Salicornia powder. Taste was highest at 6.36 with 0.6% powder and there was no significant difference compared to BSP6 and BSP9. Based on these findings, it was concluded that the brown sauce with Salicornia has antioxidative characteristics and the best salinity is achieved with 0.6% freeze-dried Salicornia powder. Salicornia had enough salinity to substitute salt to a certain degree and improved the quality of brown sauce in terms of the sensory test.

• Culinary science and hospitality research
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• v.19 no.3
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• pp.46-56
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• 2013

This study investigates the quality characteristics of Sikhye, a Korean traditional drink, made with different amounts of Monascus anka rice, or red yeast rice, and the results are as follows. During the saccharification process of red yeast rice, there was not significant change in pH, and its sugar content increased. It revealed that the optimal hours of saccharification for making Sikhye were four or five hours, which showed the highest in $^{\circ}Brix$. PH decreased significantly with increasing amounts of red yeast rice, and there was no change in sugar content and reducing sugar. Chromaticity L values decreased with increasing amounts of red yeast rice, and a value, b value and the turbidity increased. DPPH free radical scavenging activity of the samples showed significant differences in the samples with high scores as the amounts of red yeast rice increased. As a result of measuring the total microorganism number of the sample stored at $4^{\circ}C$, storability was improved with increasing amounts of red yeast rice. Preference was high in the order of 40%, 50%, 30%, 20%, 0%, and 10%, and the optimal amount of red yeast rice was less than 40-50%. Adding red yeast rice showed high scores in the sensory test, showing red color in Sikhye. In addition, its antioxidative activity effect and microbial growth inhibitory activity were considered to improve storability and preference.

• Food Science and Preservation
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• v.23 no.5
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• pp.631-637
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• 2016

Quality characteristics of Yanggaeng prepared with water extract (CRE) and powder (CRP) of roasted coffee ground (CR) were investigated. Total polyphenol content and DPPH raidcal scavenging ability of water extract of CRE were 13.52 g/mL and 78.75%, respectively. The pH ranges of Yanggaeng prepared with CRE (CREY) and CRP (CRPY) were 7.10~7.29 and 6.95~7.15, respectively. The DPPH radical scavenging activities of CREY containing 0.1~1.0% CRE showed 8.77~43.10% and CRPY containing 0.1~1.0% CRP showed 5.28~14.92%. The total polyphenol contents and DPPH radical scavenging activity of CREY and CRPY increased significantly with increasing CRE and CRP concentrations (p<0.05). Sensory evaluation which includes taste, flavor, texture, and overall acceptability of CREY and CRPY were higher than that of control. The overall acceptability showed the highest levels in Yanggaeng containing 0.5% CRE and containing 0.3% CRP. These results indicate the potential use of roasted coffee ground residue as a valuable resource for development of side menu in coffee restaurants.

• Culinary science and hospitality research
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• v.19 no.5
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• pp.110-120
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• 2013

Five types of kiwi jelly were prepared with different rates of pressed kiwi juice and carrageenan, and their quality characteristics such as chemical composition, saccharinity, color, texture, and sensory attributes were measured. There were no significant changes in moisture, crude lipid, carbohydrate, but significant differences were shown in crude ash, crude protein, pH, and acidity. The pH decreased and acidity increased as the amount of added kiwi juice increased. The saccharinity of kiwi jelly increased with increased amount of added kiwi juice. Additionally, the total phenolic content, DPPH radical scavenging activity and content increased with increased amount of added kiwi juice. The hardness, gumminess, and chewiness increased with increased levels of carrageenan. As the amount of added carrageenan increased, the L values of kiwi jelly decreased. Based on the sensory evaluation test, kiwi jelly, JKJ(Jeju Kiwi Jelly)-3 was the best in the flavor, sweetness, texture, and overall acceptability. The chemical composition of JKJ-3 was as follows : moisture $75.1{\pm}0.5%$, carbohydrate $24.2{\pm}0.5%$, crude protein $0.29{\pm}0.05%$, and crude ash $0.44{\pm}0.02%$. The kiwi jelly, JKJ-3 of overall acceptability values in the sensory test for flavor, sweetness, hardness, texture and overall favorite were 3.65, 3.35, 3.35, 3.50 and 3.60, respectively, with the addition of 20% pressed kiwi juice and 2.3% carrageenan.

• Food Science and Preservation
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• v.10 no.2
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• pp.175-181
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• 2003

Yogurt base was prepared from skim milk supplemented with sweet persimmon powder at the levels of 4% and 7％ and was fermented with Lactobacillus acidophillus. Sweet persimmon powder contained protein 2.2%, fat 30.5%, carbohydrate 56.6% and ash 2.5%, Quality characteristics of prepared yogurt were evaluated for acid production(pH), visible cell numbers, sensory property and oganic acid compositions during fermentation. Lactic acid content in yogurt supplemented with sweet persimmon powder was higher (1.12%∼l.21%) than that (1.05%) in yogurt made with only skim milk after 24 hours fermentation. The sensory score was higher yogurt made with skim milk than yogurt supplemented with sweet persimmon powder in taste, texture and overall acceptability. However, the acid production in yogurt supplemented with sweet persimmon powder were not significantly difference compared to yogurt made with skim milk The antioxidative activity by DPPH(a-a'-diphenyl-${\beta}$-picrylhydratyl) method in yogurt supplemented with sweet persimmon powder and yogurt made with skim milk were higher than BHT 0.005 ％ used as control.

• Food Science and Preservation
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• v.15 no.1
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• pp.144-149
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• 2008

Physiological, sensory and microbiological evaluations were conducted during fermentation of Chungkookjang. with Choi-cha (non-fermented green tea) powder in efforts to improve the sensory quality of Chungkookjang. Growth of fermentative microorganisms in Chungkookjang was inhibited by Choi-cha; the pH and VBN value decreased as the concentration of Choi-cha increased. Brightness (L) and redness (a) of Chungkookjang fermented with Choi-cha were significantly decreased, resulting in the appearance of all samples fermented with Choi-cha being less attractive than was the control. The sensory quality of Chungkookjang was significantly increased when Choi-cha was added up to 3%, (w/v), and off-odor was reduced. The antioxidative property of Chungkookjang fermented with 3% (w/v) Choi-cha was significantly higher than that of the control. This result indicated that the sensory quality of Chungkookjang was improved by fermentation with 3% (w/v) of Choi-cha powder.