Journal of Practical Agriculture & Fisheries Research
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v.25
no.4
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pp.118-126
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2024
Recently, the alternative meat (food) market is growing rapidly due to the increase in meat consumption due to global population growth and income improvement, as well as issues such as equal welfare, carbon neutrality, and sustainability. The government is also developing a green bio convergence new industry development plan to foster alternative foods, but there are difficulties in commercialization due to the lack of technology and insufficient production facilities among domestic small and medium-sized enterprises, so it is necessary to build joint utilization facilities and equipment to resolve the difficulties faced by companies. am. In addition, small and medium-sized enterprises are having difficulty developing and commercializing plant-based meat substitutes due to a lack of technical skills, and related equipment is expensive, making it difficult to build equipment on their own. Accordingly, Jeollabuk-do is pursuing a strategy to secure the source technology for development, processing, and industrialization of plant-based substitute meat at the level of developed countries by establishing a plant-based alternative meat industrialization center. In this study, an economic feasibility analysis study was conducted when a plant-based alternative meat industrialization center is built in Jeollabuk-do. As a result of the analysis, B/C=1.32, NPV=374 million won, and IRR=4.8%, showing that there is economic feasibility in establishing an alternative meat industrialization center. In addition, as a result of analyzing the regional economic ripple effect resulting from the establishment of an industrialization center, if 38 billion won is invested in Jeollabuk-do, the nationwide production inducement effect is 74 billion won, the added value inducement effect is 29.8 billion won, and the employment inducement effect is 672 people
In this study, we evaluated the changes of fruit quality indices during fruit development and ripening in Korean new pear cultivar 'Changjo', developed from a cross between 'Tama' and '81-1-27' ('Danbae' ${\times}$ 'Okusankichi') in 1995 and named in 2009, to determine appropriate harvest time and to enhance the market quality and broaden the cultivation area. The fruits of 'Changjo' pears harvested from 132 days after full bloom (DAFB) to 160 DAFB. Fruit growth and quality indices were monitored at 1 week interval by measuring fruit weight, length, diameter, firmness, and taste related quality indices. The calculated fruit fresh weight increased continuously with fruit development and reached to an average of 594g on Sep. 20 (160 DAFB). The ratio of length to diameter declines as fruit maturation progress, resulting in 0.898 for ripe fruit stage as a round oblate shape. Flesh firmness of 'Changjo' pears showed over 30N until 153 DAFB and then decreased abruptly with fruit ripening, reaching a final level of about 26.44N on 160 DAFB. Starch content of fruit sap was also decreased abruptly after 146 DAFB which decreased almost half of the fruits harvested at 139 DAFB. In parallel with the decrease of flesh firmness, ethanol insoluble solids (EIS) content decreased sharply with fruit ripens, only 50% of EIS was detected on the fruits harvested on 160 DAFB when compared to that of the fruits harvested on 139 DAFB (Aug. 30). The maximum value of soluble solids contents was observed in the fruits harvested on 153 DAFB, resulting in $14.2^{\circ}Brix$. The changes of skin color difference $a^*$ which means loss of green color occurred only after 139 DAFB, coincide with the decrease of SPAD value of the fruit skin. The sugars of the 80% ethanol soluble fraction consisted mainly of fructose, sorbitol, glucose and sucrose, also increased during maturation and ripening. Fructose and sucrose contents were larger than those of glucose and sorbitol in flesh tissues. These results were explained that stored starch is converted to soluble sugars during fruit maturation, mainly in fructose and sucrose increasing the sweetness of this cultivar. Total polyphenols were increased up to middle of fruit maturation (146 DAFB) and then decreased continuously until the end of fruit maturation. Consequently, our results suggested that the commercial harvest time of 'Changjo' pears should not be passed 153 DAFB and late harvest of this cultivar would not good for quality maintenance during shelf-life. As a result of the post-harvest low-temperature acclimation experiment during the short-term transportation period, fruits harvested at 146 DAFB tended to maintain higher firmness after 14 days of simulated marketing at $25^{\circ}C$ compared to fruits harvested at 153 DAFB regardless of temperature set. And, the slower the rate of decrease to the final transport temperature of $5^{\circ}C$, the higher the incidence of internal browning and ethylene production. Therefore, in order to suppress the physiological disorder and to maintain the fruit quality when exporting to Southeast Asia in the 'Chanjo' pears, it is desirable to lower the temperature of the fruits within a short time after harvest and to set the harvest time before 146 days after full bloom.
The effects of drying methods on the browning and moisture sorption characteristics of Rubus coreanus were studied. Fruits were steamed for 5 min at $100^{\circ}C$, dried by sun drying, infrared drying, or freeze drying, and powdered to a size of 20 mesh. Color values were measured and equilibrium moisture contents (EMC) were determined at $20^{\circ}C$, over a range of water activity ($a_w$) from 0.11 to 0.90. The browning indices $L^*$ and $a^*$ values were higher and lower, respectively, in freeze-dried Rubus coreanus compared with other samples. The $b^*$ value was greatest in freeze-dried Rubus coreanus. EMC tended to increase with increasing $a_w$ values, and a particularly sharp increment was observed above 0.75 $a_w$. The EMC of freeze-dried Rubus coreanus was significantly higher compared with the EMC of sun-dried and infrared-dried fruit at constant aw. The moisture sorption isotherms showed a typical sigmoid shape, and the Halsey, Kuhn, and Oswin models were the best fits for the sun-dried, infrared-dried, and freeze-dried powder isotherms, respectively. With respect to monolayer moisture content, the Guggenheim-Anderson-Boer (GAB) equation showed that the various drying methods yielded very different results, with monolayer moisture contents of 0.005 g $H_2O/g$ dry solid in infrared-dried and 0.019 g $H_2O/g$ dry solid in sun- and freeze-dried powders, respectively. These results indicate that the drying method affects the browning and moisture sorption characteristics of Rubus coreanus.
Jung, Hyun Jung;Sung, Hea Mi;Kim, Kyung Mi;Shin, Yu-Rim;Wee, Ji-Hyang
Journal of the Korean Society of Food Science and Nutrition
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v.44
no.8
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pp.1157-1164
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2015
The present investigation evaluated the antioxidant activities of water extracts from dandelion (Taraxacum officinale) aerial parts, roots, and mixed extracts. Mixed extract of T. officinale was a mixture of aerial parts and roots at 9:1 and 8:2 weight ratios. Extracts from aerial parts (DAE), roots (DRE), and mixture of aerial parts and roots (DME) were measured for cell viability and catalase activity in HepG2 cells, 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity, and lipid peroxidation inhibitory activity. Cell viabilities of HepG2 cells treated with DAE, DRE, DME 8:2, and DME 9:1 against $H_2O_2$-induced oxidative damage were 63.4%, 54.6%, 76.7% and 83.4% at a concentration of $400{\mu}g/mL$, respectively. Catalase activity was highest in DME 9:1 (12.2 mU/min/mg protein) compared with DAE (9.0 mU/min/mg protein) and DRE (9.7 mU/min/mg protein). DPPH radical scavenging activity of DME showed a significantly lower $EC_{50}$ value than DAE ($EC_{50}$ value of DME $9:1=163.3{\mu}g/mL$, DME $8:2=172.4{\mu}g/mL$, and $DAE=173.7{\mu}g/mL$). Lipid peroxidation inhibitory activity of DME showed a significantly lower $EC_{50}$ value than DAE [$EC_{50}$ values of DME $(9:1)=454.4{\mu}g/mL$, DME $(8:2)=426.6{\mu}g/mL$, and $DAE=654.7{\mu}g/mL$]. The results indicate that a small amount of T. officinale roots increased antioxidant activity of aerial parts. Especially, a 9:1 mixture was more valuable than 8:2 mixture for industry.
Kim, Joo-Young;Seong, Gi-Un;Hwang, In-Wook;Chung, Shin-Kyo
Journal of the Korean Society of Food Science and Nutrition
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v.44
no.8
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pp.1206-1211
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2015
Grape juice is consumed worldwide and studied due to the high antioxidant activities and contents. The color of grape juice is due to the presence of phenolic compounds such as anthocyanins. Therefore, color values can be an indicator of antioxidant capacities of grape juice. However, the correlation between color values and antioxidant activities in grape juice has not been well studied. In this study, the physicochemical characteristics and correlation between color values and antioxidant capacities of Korean red grape juices (five commercial juices from market and two juices prepared in the laboratory) were investigated to estimate antioxidant capacities. Antioxidant capacities were determined by 1,1-diphenlyl-2-picrylhydrazyl radical scavenging assay, ferric ion reducing antioxidant power assay, and oxygen radical absorbance capacity assay. Total phenolic contents, total flavonoid contents, and total anthocyanin contents, including five kinds of polyphenolic compounds, were examined by high performance liquid chromatography (HPLC). The results for physicochemical properties showed similar values, except titratable acidity. The color hue values of the prepared juices were higher than those of commercial juices, which was in contrast to the lower color intensity values (P<0.05). The Hunter L, a, and b values showed almost no difference between commercial and prepared juices. The antioxidant activities and total phenolic contents of commercial juices were higher than those of prepared ones. Gallic acid, catechin, and quercetin were confirmed by HPLC in all samples. The total phenolic and total flavonoid contents showed positive correlation with antioxidant activities. In addition, antioxidant activities and contents correlated with color values. Thus, estimation of antioxidant capacity could be feasible through the spectrophotometric measurement of color values.
Chae, Hyun Seok;Kim, Nam Young;Woo, Jae Hoon;Park, Seol Hwa;Son, Jun Kyu;Back, Kwang Soo;Lee, Wang Shik;Kim, Si Hyun;Hwang, Kyung Jun;Kim, Young Jin;Park, Nam Gun
Journal of The Korean Society of Grassland and Forage Science
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v.36
no.4
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pp.325-332
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2016
The objective of this study was to determine the growth characteristics of cool ($C_1$) and warm season grasses ($C_2$) in pastures mixed with $C_1$ and $C_2$ suitable for grazing horses and effect of pastures mixed with tall and short grasses on the intake characteristics of horses. $C_1$ used in this study was Kentucky bluegrass, Redtop (short type grass) and tall type grasses were orchardgrass and tall fescue, respectively. The short type grass used as $C_2$ was Bermudagrass. This study had the following four treatment groups: 1) Treatment 1 (Bermudagrass + Kentucky bluegrass + Redtop) 2) Treatment 2 (Bermudagrass + tall fescue + orchardgrass) 3) Treatment 3 (Kentucky bluegrass + Redtop) 4) Treatment 4 (tall fescue + orchardgrass). There was no winterkilling or lodging problem at an altitude of 200 m. Plant heights in mixed pasture of Treatment 1, 2, 3, and 4 were 53.9, 58.2, 57.5, and 78.1 cm, respectively. Plant height was the highest in Treatment 4. Dry matter yield was in the following order : Treatment 4 > Treatment 3 > Treatment 2 > Treatment 1. In the first investigation regarding vegetation distribution, Bermudagrass ratios among grasses in Treatment 1 and Treatment 2 were 70% and 66.7%, respectively. Overall, other grasses showed poor growth. In the second investigation of vegetation distribution, Bermudagrass ratios among grasses in Treatment 1 and Treatment 2 were 80% and 60.7%, respectively. Crude protein content, neutral detergent fiber content, acid detergent fiber content, digestibility value, and nutritive values were the lowest in Treatment 4, followed by those in Treatment 1, Treatment 2 and Treatment 3.
Seo, Yu-Mi;Kim, Hyun-Ji;Lee, Eun-Joo;Chung, Chungwook;Sung, Hwa-Jung;Sohn, Ho-Yong;Park, Jong-Yi;Kim, Jong-Sik
Journal of Life Science
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v.28
no.3
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pp.339-344
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2018
Schizandra chinensis has been used as a traditional Chinese medicine and is known to have various bioactive components, including schizandrin and gomisin A. In the current study, we investigated the anti-inflammatory activities and their working mechanisms of ethanol extracts of pomace of Schizandra chinensis (PSC), schizandrin (SZ), and gomisin A (GA). First, we analyzed the effects of PSC on nitric oxide (NO) production and cell viabilities in lipopolysaccharide (LPS)-stimulated RAW264.7 cells. The results indicated that PSC dramatically reduced NO production in LPS-activated RAW264.7 cells in a dose-dependent manner without affecting cell viabilities. PSC also decreased the expression of pro-inflammatory genes iNOS and COX-2, whereas the expression of TNF-${\alpha}$ was not affected by PSC. In addition, PSC inhibited phosphorylation of p38, ERK1/2, and JNK but did not change the expression of their total protein. The results indicate that PSC can regulate LPS-induced inflammatory responses by suppressing MAPK (mitogen-activated protein kinase) signaling. We also analyzed the effects of SZ and GA on NO production and cell viabilities in RAW264.7 cells. The results showed that SZ and GA also decreased NO production in a dose-dependent manner in LPS-activated RAW 264.7 cells without affecting cell viabilities. SZ reduced the expression of iNOS, whereas GA downregulated iNOS and COX-2. Overall, these findings clarify the molecular mechanisms of the anti-inflammatory effects mediated by PSC, SZ, and GA.
Kim, Dong-Kwan;Son, Dong-Mo;Lee, Kyung-Dong;Rim, Yo-Sup;Chung, Jung-Sung
KOREAN JOURNAL OF CROP SCIENCE
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v.59
no.4
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pp.470-476
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2014
The purpose of this study was to investigate the effects of sowing time on ecological responses, growth, and yields of cowpeas grown in plastic greenhouses in a southern region of South Korea. Experiments were carried out in Naju, Jeonnam Province (Latitude $35^{\circ}$ 04' N, Longitude $126^{\circ}$ 54' E) during 2012 and 2013. The intermediate-erect type strains used in this study were Jeonnam1 and Jeonnam2. Sowing was performed between mid-March and mid-August at intervals of one month. The days from sowing to emergence was significantly higher for the mid-March sowing (12 days) but no significant differences were observed among the other sowing dates (3 to 4 days). The days from sowing to first flowering were shorter for sowing dates between mid-March and mid-July because sowing time was delayed and then were lengthened again at mid-August sowing; the days were longest at mid-March sowing (around 75 days) and were shortest at mid-July sowing (30 days). The days from first flowering to harvesting were short for the sowing dates between mid-March and mid-May (24 to 28 days) but were relatively long for subsequent sowing dates (35 to 38 days). Stem and peduncle lengths were relatively long for the mid-April and mid-August sowing dates. Main-stem node number was highest for the mid-June sowing. Branch number per plant was highest for the mid-March sowing. The mid-March sowing displayed the highest number of pods per plant as well as the heaviest seed weight. Yield per 10 ares was highest for the mid-March sown Jeonnam1 and the Jeonnam2 strains (340 and 367 kg respectively), and then tended to decrease due to subsequent delays in sowing.
This study investigates the safety of Hanwoo beef and consumer satisfaction through the questionnaire for 280 consumers of Hanwoo beef in Gyeongsangbuk-do. Among 280 copies, only 245 copies were adopted to analyze. The subjects consisted of 82(33.2%) males and 163(66.5%) females and their age 55(22.4%) of twenties, 52(21.2) of thirties, 86(35.1%) of forties and 52(21.2%) of over fifties. The frequency of purchasing Hanwoo beef was that as consumers were getting older, they tended to purchase more beef. The most popular place for purchasing Hanwoo beef was Hanwoo specialty stores(55.1%), but there was no statistical difference. The most favorite retail cuts for Hanwoo beef was Loin(44.5%), followed by ribs(26.1%). The consumers thought that selling imported beef turned into Hanwoo beef occurred 70.2%(sometimes), and 20.8%(yes), 6.1%(don't know) and 2.9%(never). For a method to prevent it, the traceability system(60.4%) was the highest, followed by country of origin labelling(16.3%). Taking the perfect score 5 points about the country of origin marks and traceability, trustworthiness which was presented the highest points was 3.31, recognition 3.29, experience 3.26 and practical effect 3.07. The average of two systems was 3.23. The average points of the safety and consumer trustworthiness of Hanwoo beef were 2.96 points and 3.13 respectively. The safety and the consumer trustworthiness showed statistically significant difference according to educational background, income, and jobs. From the results obtained in the current study, it is concluded that if the traceability system and country of origin labelling are managed well by the government, safety and consumer trustworthiness will be improved.
This study has been carried out to secretion antibodies for the purpose of preventing the infection of Helicobacter pylori and using them as a supplement for treatment. This experiments have been separated antigens from H. pylori and observed into antibody production and the agglutination of H. pylori for the separated antigens. As major antigenic proteins separated from H. pylori, the following could be verified: 12 kinds of band for whole cell (WC), seven kinds of band for outer membrane protein (OMP), three kinds of band for crude urease, and one kind of band for lipopolysaccharide (LPS). The IgG anti-H. pylori antibody of separated antigens showed $77.9{\pm}6.4{\mu}g/ml$ for we (L), $84.9{\pm}6.4{\mu}g/ml$ for OMP, and $123.8{\pm}2.9{\mu}g/ml$ for crude urease, at the same antigen concentration of $20{\mu}g/100ull$, which showed the most at the crude urease. And it turned out that the IgA antibodies were generated with $2.5{\pm}0.32{\mu}g/ml$ for WC (L), $2.0{\pm}0.43{\mu}g/ml$ for OMP, and $1.3{\pm}0.25{\mu}g/ml$ for crude urease, which demonstrated the most for WC (L) antigens. As a result of verifying the immunogenecity of antigenic protein through the Western blotting, major antigenic substances could be confirmed as follows: 10 kinds for WC, six kinds for OMP and three kinds for crude urease. The agglutination values on the H. pylori of the antibody were $2^5,\;2^5,\;2^6\;and\;2^7$ at the antigen serums of anti-WC (H), anti-WC (L), anti-OMP and anti-crude urease, respectively, which indicated the highest for the antigen serum of anti-crude urease. The urease activation-inhibiting absorbance of antigen serum created by each antigen was $0.14{\pm}0.01$ for WC (H), $0.16{\pm}0.01$ for WC (L), $0.18{\pm}0.03$ for OMP, and $0.18{\pm}0.04$ for urease, demonstrating a significant inhibiting effect, compared with $0.26{\pm}0.02$ of the control group.
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