The study investigated the chemical components, antioxidant activities, and glucose-regulating enzyme activities of red chicory (Cichorium intybus L.). On a dry weight the contents of moisture, crude protein, crude fat, crude ash, crude fiber, and carbohydrate were 7.36, 28.0, 4.33, 19.63, 10.84 and 40.52%. The contents of mineral were Na (772.39 mg/100 g), K (5,686.03 mg/100 g), Mg (307.48 mg/100 g), Ca (804.94 mg/100 g), Fe (8.61 mg/100 g), and P (1,145.24 mg/100 g). Chlorophyll a, Chlorophyll b, total chlorophyll (793.80, 363.06, 1,156.86 mg/100 g,), total carotenoid (171.82 mg/100 g), and anthocyanin (79.49 mg/100 g) contents were measured. Antioxidant activities were analyzed for water and 70% ethanol extract. The polyphenol contents 23.67, 32.58 GAE mg/g, and flavonoid contents were 18.15, 28.76 RE mg/g, respectively. The DPPH scavenging activity IC50 was 694.48, 76.12, μg/mL, and the ABTS scavenging activity IC50 1,154.90, 566.00 μg/mL, respectively. In reducing power, the 70% ethanol extract showed a higher reducing power. In α-glucosidase and α-amylase inhibition activity IC50, the 70% ethanol extract (5.87, 17.91 mg/mL, respectively) showed a higher than water extract (8.87, 100 < mg/mL, respectively). This study is expected to provide basic data for developing functional food ingredients for red chicory.

This study was performed to evaluate the quality characteristics and antioxidant activity of Nurungji by varying the purple sweet potato powder addition time (AR: added after rice cooking, BR: added before rice cooking) and powder ratio (0, 2, 4, 6, 8%) on the prepared rice during Nurungji’s manufacturing. In both AR and BR samples, water binding capacity, soluble solid content, reducing sugar, and hardness increased with an increasing proportion of purple sweet potato powder; however, the pH and moisture content decreased. The L value and b value decreased and increased with the influence of anthocyanin in purple sweet potato powder. The total polyphenol, flavonoid, anthocyanin contents, DPPH, and ABTS radical scavenging activity were highest in Nurungji with 8% of purple sweet potato powder. Moreover, AR samples showed higher antioxidant activity than BR samples. Based on the study results above, the preparation of Nurungji with 8% purple sweet potato powder by AR process was more favorable based on the content of antioxidants and antioxidant activity.

This study aimed to prepare 50% sugar substitute strawberry jam with different neohesperidin dihydrochalcone (NHDC) addition levels (0.0136%, 0.054%, 0.072%, and 0.090%) and investigate their quality characteristics. NHDC is an artificial sweetener 1,500-1,800 times sweeter than sugar. There was no significant difference in the moisture c ontent a nd s ugar c ontent o f strawberry j am w ith NHDC except for Sugar. T he t otal p olyphenol content and total anthocyanin content did not significantly differ between all samples. Therefore, NHDC does not appear to have any effect on antioxidant activity. The brightness, redness, and yellowness were generally increased as NHDC increased. This result seems to be due to the difference in the color of NHDC and the concentration and moisture content due to heating during the jam manufacturing process. The overall acceptability and sweetness were highest in Sugar, followed by NH3. It seems desirable to add 0.072% of NHDC to replace 50% of sugar content. However, it was found that NHDC could not wholly replace sugar because of its distinct sweetness from sugar. Therefore, it is necessary to study high-sweetener materials with sweetness similar to sugar by changing the chemical structure of NHDC.

The purpose of this study is to compare the quality characteristics and antioxidant activities of the tagatose yogurt with different contents (6, 8, 10%) of cold brew liquid coffee. Tagatose is a low-calorie food ingredient with putative health-promoting benefits. The tagatose yogurt was fermented with Lactobacillus delbrueckii subsp. bulgaricus at 37±1oC for 20 h. The changes in acid production (pH and titratable acidity), viscosity, and lactic acid bacteria were determined every 5 h during fermentation. Color value was determined before and after fermentation, and antioxidant activities were performed after fermentation in triplicate. The yogurts containing cold brew liquid coffee had lower pH, higher acidity, and viscosity than the control, regardless of the liquid coffee contents. All samples had increasing levels of lactic acid bacteria over the fermentation period, but lactic acid bacteria of yogurts with the addition of cold brew liquid coffee increased further than the control. The total polyphenol/flavonoid content, DPPH/ ABTS/H2O2 radical scavenging activities, and reducing power increased when the liquid coffee content of the yogurt rose. Consequently, the optimal quality of tagatose yogurt was found when 6-8% of cold brew liquid coffee was added according to the overall results of quality properties and antioxidant activity.

Various jellies were produced depending on the type and concentration of gelling agent (nine types), which added a single or double agent in jelly production. Firstly, jelly was manufactured using nine different single gelling agents and characterized. Secondly, six suitable gelling agents were selected to combine double gelling agents among nine gelling agents. To find the optimum gelling agent condition, jelly was intentionally made around 3.6-3.7 pH and 4- 5 N fracturability. A total of 1.2% gelling agent (both single and double agents) was suitable for making jelly (3.6- 3.7 pH, 4-5 N fracturability). According to the analytical result, the optimum single gelling agent was κ-carrageenan and gellan gum, while a suitable combination of double gelling agents was κ-carrageenan and gellan gum at ratios of 1.0:0.2, 0.8:0.4, and 0.6:0.6 and agar and locust bean gum at ratios of 0.8:0.4, 0.6:0.6.

In order to increase the industrial applicability of health functional materials using edible insects, effective extraction processes were explored to improve the quality characteristics of the free amino acids and fatty acids of Protaetia brevitarsis seulensis larvae (PBSL). After extracting PBSL under four conditions, water extraction at 50℃ (MWE), water extraction at 95℃ (HWE), ultrasonic extraction (USE), and high pressure extraction (HPE), the free amino acid content and fatty acid compositions of the extracts were evaluated. Essential free amino acid content as well as total free amino acid content were the highest in the HPE extract, followed by USE, HWE, and MWE extracts. In the HPE extract, the content of some essential amino acids increased dramatically, and the types of major amino acids had also changed. Additionally, the proportion of unsaturated fatty acids in PBSL was 69.9%, which was higher than the reported value in meat, the main protein source for Koreans. This level has also been further enhanced by USE (78.6%) and HPE (75%). These results show that HPE and USE can enhance the nutritive value of PBSL as a health functional material by improving the composition of free amino acids and fatty acids.

Population aging due to the increase in the average age is a common challenge in modern society, and the resulting degenerative sarcopenia requires a new solution. Since sarcopenia is caused by various factors such as protein imbalance, lack of exercise, and increased inflammation, a multi-pronged approach through scientific cause analysis is required. This can create a new blue ocean for the food industry, but the current domestic research on sarcopeniaimproving food ingredients is in its infancy. The academia and industries abroad, including those of the United States, are conducting comparatively extensive research and development, but there are material limitations limited to soybean protein, as well as whey protein and formulation limitations due to an exercise supplement-oriented approach.

This study investigated the antioxidative and anti-inflammatory activities of Peucedanum japonicum (PJ) grown in outfield and the plant factory with artificial lights (BRW; Blue (B) + Red (R) + White (W) LED), BW (B+W LED), Fluorescent (FL), BRFL (B + R LED + FL), and WFL (White LED + FL). It was found that the outfield PJ extract had the highest antioxidant levels (DPPH, ABTS, polyphenol). Among the extracts of PJ grown in the plant factory, the BW PJ extract showed the highest antioxidant activity. In xanthine oxidase inhibitory activity, the IC50 value of the FL PJ extract was 0.75 μg/mL, which was superior to that of the outfield extract (2.35 μg/mL). BW and outfield PJ extracts significantly increased SOD and CAT activities compared to the control without any PJ. The concentrations of TNF-α and IL-6 significantly and dose dependently decreased in PJ treated groups. The results suggest that the antioxidant and anti-inflammatory activities of the PJ grown in the plant factory are good as those of the outfield PJ, and may be a great help in future research on functional activities for the plants grown in the plant factory with artificial lights.

Food safety and environmental sustainability attract the consumer’s interest. Kimchi was fermented with natural ingredients that are expected to replace the salted-fermented fish products (jeotkal), and their effects on volatile aroma properties during fermentation were investigated. The addition of jeotkal and its substitutes to kimchi affected the fermentation speed; however, with the progression of fermentation, sulfur-containing compounds and aldehydes decreased, and fermented products, such as alcohols and acids, increased. The acetic acid level was the lowest in kimchi fermented with jeotkal on the 28th day. As the ratio of acetic acid increased, the acidity increased and pH decreased. Additionally, jeotkal added to kimchi and its substitutes (meat, seafood, and vegetable extracts) that replace jeotkal provide a time difference in fermentation, but as a result, the sensory differences were not affected. Therefore, immediately after preparing kimchi (before fermentation and aging), flavored substances derived from various components may have exerted a sensual effect, but the composition of volatile components in kimchi changed following fermentation. It was considered that the sensory effect of the auxiliary components was decreased upon fermentation. These results could support a replacement of the salted-fermented fish products (jeotkal) in kimchi without a sensory difference.

This study was performed to improve awareness of mudfish and develop tteokgalbi supplemented with mudfish suitable for young ages. Tteokgalbi was produced with flour·starch (control), rice paste was replaced with wheat flour·starch, and mudfish paste was substituted with 5, 10, and 15% of meat and tallow. No differences were found in the moisture content, pH, and Brix of all samples supplemented with rice and mudfish paste. The samples supplemented with rice and mudfish pastes had reduced cooking loss rates compared to the control. The samples supplemented with rice and mudfish pastes increased in both a and b values but decreased in L values compared to the control. The hardness and adhesiveness of the control were higher than in other samples. The adhesiveness of the samples was reduced with an increase in quantities of mudfish pastes. The overall acceptability of samples supplemented with rice and mudfish pastes was better than that of the control, and the proper quantity for substituting mudfish paste appears to be 10%. The unique flavor and taste of mudfish did not affect the sensory evaluation and did not distinguish even in the principal component analysis using an electronic nose. Finally, the mudfish paste was confirmed as a good ingredient for enhancing consumer acceptability in manufacturing tteokgalbi.