• Title/Summary/Keyword: Omega-3 fatty acids

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Elizabethkingia miricola BM10, a New Symbiotic Bacterium Isolated from the Hindgut of the Termite Reticulitermes speratus KMT001

  • LEE, Dongmin;KIM, Young-Kyoon;KIM, Yeong-Suk;KIM, Tae-Jong
    • Journal of the Korean Wood Science and Technology
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    • v.47 no.6
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    • pp.692-699
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    • 2019
  • Elizabethkingia miricola BM10, a symbiotic bacterium, has been isolated from the hindgut of Reticulitermes speratus KMT001, a termite which occurs on Bukhan Mountain in Seoul, Korea. This strain demonstrated a symbiotic characteristic, in that it lacked endo-${\beta}$-1,4-glucanase activity, in a previous study. The major fatty acids of E. miricola BM10 were iso-$C_{15:0}$, iso-$C_{17:0}$ 3-OH, and summed feature 3 (iso-$C_{16:1}{\omega}7c/C_{16:1}{\omega}6c$). The content of iso-$C_{17:0}$ 3-OH was higher, while those of ECL 13.566, iso-$C_{17:11}{\omega}9c$, and summed feature 4 were lower than the other three type-strains of the Elizabethkingia genus. The 16S rRNA phylogenetic analysis confirmed that E. miricola BM10 is a new species. The whole genome of E. miricola BM10 was sequenced. The average nucleotide identity of strain BM10 as evaluated by pairwise comparison with E. anophelis R26, E. meningoseptica ATCC 13253, and E. miricola GTC 862 was shown to be 91.5%, 81.2%, and 94.29%, respectively. Based on our study results, E. miricola BM10 appears to represent a new strain of the genus Elizabethkingia.

Application of Membrane Bioreactor Technology for the Development of Bioactive Substances from Seafood Processing Byproducts

  • Kim, Se-Kwon;Mendis, Eresha
    • Journal of Marine Bioscience and Biotechnology
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    • v.1 no.1
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    • pp.9-21
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    • 2006
  • Foods and related substances from diverse sources known to have a potential for disease risk reduction are called functional foods, while nutraceuticals are bioactive compounds isolated from food and sold in dosage form. Nutraceutical and functional food industries are rapidly growing in recent years and most of the cases development of these functional materials involves certain biotransformation processes. A number of bioactive compounds has been identified up to date and isolated from seafood related products through enzyme-mediated hydrolysis. The enzymatic bioconversion process require suitable biocatalysts and appropriate bioreactor systems to incubate byproducts with digestive enzymes. Membrane bioreactor technology is recently emerging for the development of bioactive compounds from seafood processing byproducts.

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Nutritional Issues for Colorectal Cancer Prevention (대장암 예방을 위한 영양학적 이슈)

  • Soyeon Jeong;Jung Ho Kim
    • Journal of Digestive Cancer Research
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    • v.11 no.2
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    • pp.77-84
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    • 2023
  • Dietary habits play a significant role in the development of colorectal cancer. Over the past decades, various epidemiological and meta-studies have indicated a close relationship among nutrient intake, dietary habits, and incidence of colorectal cancer. Less consumption of red or processed meat and alcohol, if possible, and high consumption of vitamins B and D, garlic, magnesium, fiber, calcium, and omega-3 fatty acids reduce the risk of colorectal cancer. Additionally, balanced diet intake and proper weight maintenance are crucial for colon cancer prevention. All these factors are modifiable and associated with the recurrence and overall survival after cancer development, thereby greatly contributing to the nutritional treatment of patients diagnosed with colorectal cancer.

A Study on the Menu Planning Program by Food Exchange Group (식품교환군을 이용한 식단 작성 프로그램 개발에 대한 연구)

  • kang, Hyeon-Ju;Kim, Kyung-Ja;Kim, Il
    • Journal of Nutrition and Health
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    • v.31 no.7
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    • pp.1192-1205
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    • 1998
  • The purpose of this study was to develop a software system for computerized menu planning program by food exchange group. In this research, Powerbuilder 5.0 was used. This study provides food service manegers with more effective manegement system and scientific menu. Software programs developed in this study were summerized as follows : 1) Programs for outputing standard amounts of the exchange food groups fir calories. 2) Programs for inputing the cooking type code, the food code and the food amount of the menu. 3) Programs for outputing distribution of the exchange food groups of the computerized menu. 4) Programs f0r calculating the price of each food and menu. 5) Programs for calculating the nutrient contents of each food and menu. 6) Programs for calculating fatty acids of dietary intake. 7) Programs for calculating PUFA : MUFA : SEA ratio and $\omega$$_{6}$ : $\omega$$_{3}$ ratio and evaluating the status of dietary intake. 8) Programs for inputing the purchasing amount of food. 9) Programs for outputing the menu table. 10) Programs for inputing and modifing the cooking types in the cooking types file. 11) Programs for inputing and modifing the prices in the food prices file.e.

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Physicochemical Characteristic and Antioxidant Activites of Cereals and Legumes in Korea (한국산 잡곡류의 이화학적 특성과 항산화활성)

  • Lee, Ha-Kyu;Hwang, In-Guk;Kim, Hyun-Young;Woo, Koan-Sik;Lee, Seong-Hee;Woo, Seon-Hee;Lee, Jun-Soo;Jeong, Heon-Sang
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.39 no.9
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    • pp.1399-1404
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    • 2010
  • Physicochemical characteristics and antioxidant activities of twelve varieties of legumes and cereals in Korea were analyzed and compared. Crude protein content was higher in legumes (20.60~34.47%) than in cereals (8.96~15.45%). Crude fat contents of soybean (17.73%) and black soybean (18.79%) were higher than other legumes (0.68~1.38%) and cereals (1.01~5.39%). The major minerals were potassium, calcium and sodium, and especially calcium and potassium were high in legumes. Unsaturated fatty acids composition ranged from 66.79% in cowpea to 85.14% in soybean, and $\Omega$-3 fatty acids (linolenic acid) content was higher of 7.47~48.25% in legumes than 0.36~3.71% in cereals. Total polyphenol content was higher 1.32~4.15 mg/g in 80% EtOH extracts from legumes than 0.53~2.83 mg/g in cereals. DPPH and ABTS radical scavenging activities were high values of 62.60% and 264.20 mg AA eq/g, respectively, in EtOH extract from sorghum.

Comparison of Quality Traits of Breast Meat from Commercial Broilers and Spent Hens in Sri Lanka

  • Lakshani, Pubudu;Jayasena, Dinesh D.;Jo, Cheorun
    • Korean Journal of Poultry Science
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    • v.43 no.2
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    • pp.55-61
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    • 2016
  • With the aim of investigating the differences in the quality traits of breast meat between spent hen and broiler chicken, the physicochemical characteristics, fatty acid profile and sensory attributes of breast meat from the two chicken types were assessed. A higher protein content and a lower moisture content were found in breast of spent hen compared to that of commercial broilers (P<0.05). No significant differences in crude fat and ash contents were detected between commercial broilers and the older spent hens (P>0.05). Spent hens showed a significantly lower pH value than did commercial broilers. Spent hen meat had a higher $L^*$ value than broiler chicken meat did (P<0.05). However, $a^*$ and $b^*$ values of breast meat were similar between spent hens and commercial broilers. Water holding capacity values measured in the breast meat were comparable between the two types of chicken used in this study (P>0.05). However, spent hen meat showed a higher cooking loss value than did broiler meat (P<0.05). Total polyunsaturated fatty acid content was significantly higher in spent hen meat compared to broiler meat, in particular eicosapentaenoic acid and docosahexaenoic acid. Nevertheless, sensory characteristics of breast meat were comparable between spent hen and broiler chicken. This information can help consumers to understand better the nutritive value and important quality traits of breast meat from commercial broilers and spent hens.

Effect of varying amounts of linseed oil or saturated fatty acids around insemination on reproductive and blood parameters of ewes

  • Hamed Esmaili;Mohsen Eslami;Hamed Khalilvandi-Behrozyar;Farhad Farrokhi-Ardabili
    • Journal of Animal Science and Technology
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    • v.65 no.5
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    • pp.922-938
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    • 2023
  • The current study was designed to evaluate the effect of sequential low and high dietary linseed oil (LO; as omega-3 enriched fatty acid; FA) before and post insemination, respectively, on different plasma variables of ewes. Fat-tailed Qezel ewes were assigned randomly to be fed a diet enriched with 3% LO (n = 30) or the saturated FA (SFA; n = 30) three weeks before insemination (Day 0). The lipogenic diet supplemented with 6% LO or SFA was fed after insemination until Day +21. The control ewes were fed an isocaloric and isonitrogenous diet with no additional FA during the study. Estrus was synchronized by inserting a vaginal sponge (Spongavet®) for 12 days + 500 IU equine chorionic gonadotropin (eCG; Gonaser®), and ewes were inseminated via laparoscopic approach 56-59 h after eCG injection. The size of ovarian structures was assessed by transvaginal ultrasonography at -21, -14, -2, 0, and +10 days. Blood samples were collected weekly to measure the plasma's different biochemical variables and FA profile. Treatment did not affect the amounts of glucose, aspartate aminotransferase, alanine aminotransferase, lactate dehydrogenase, interleukin-10, interleukin-2, and non-esterified FA (p > 0.05). Conversely, concentrations of triglyceride, cholesterol, tumor necrosis factor-alpha, and insulin-like growth factor-1 were higher in SFA-fed ewes relative to control animals (p < 0.05). LO feeding resulted in greater amounts of n-3 FA isomers in plasma, while higher amounts of stearic acid were detected in SFA fed group 0 and +21 (p < 0.05). The number of ovarian follicles and corpora lutea also were not affected by treatment. Other reproductive variables were not affected by treatment except for the reproductive rate. It seems that LO or SFA feeding of fat-tailed ewes peri-insemination period was not superior to the isocaloric non-additional fat diet provided for the control group during the non-breeding season.

Pseudo Image Composition and Sensor Models Analysis of SPOT Satellite Imagery for Inaccessible Area (비접근 지역에 대한 SPOT 위성영상의 Pseudo영상 구성 및 센서모델 분석)

  • 방기인;조우석
    • Korean Journal of Remote Sensing
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    • v.17 no.1
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    • pp.33-44
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    • 2001
  • The paper presents several satellite models and satellite image decomposition methods for inaccessible area where ground control points can hardly acquired in conventional ways. First, 10 different satellite sensor models, which were extended from collinearity condition equations, were developed and then behavior of each sensor model was investigated. Secondly, satellite images were decomposed and also pseudo images were generated. The satellite sensor model extended from collinearity equations was represented by the six exterior orientation parameters in $1^{st}$, $2^{nd}$ and $3^{rd}$ order function of satellite image row. Among them, the rotational angle parameters such as $\omega$(omega) and $\Phi$(phi) correlated highly with positional parameters could be assigned to constant values. For inaccessible area, satellite images were decomposed, which means that two consecutive images were combined as one image, The combined image consists of one satellite image with ground control points and the other without ground control points. In addition, a pseudo image which is an imaginary image, was prepared from one satellite image with ground control points and the other without ground control points. In other words, the pseudo image is an arbitrary image bridging two consecutive images. For the experiments, SPOT satellite images exposed to the similar area in different pass were used. Conclusively, it was found that 10 different satellite sensor models and 5 different decomposed methods delivered different levels of accuracy. Among them, the satellite camera model with 1st order function of image row for positional orientation parameters and rotational angle parameter of kappa, and constant rotational angle parameter omega and phi provided the best 60m maximum error at check point with pseudo images arrangement.

Effect of Garlic and Onion Juice on Fatty Acid Compositions and Lipid Oxidation in Gulbi (salted and semi-dried Yellow croaker) (굴비의 지방산 조성과 지방산화에 마늘과 양파즙이 미치는 영향)

  • Shin, Mee-Jin;Kim, Jeong-Mok
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.33 no.8
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    • pp.1337-1342
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    • 2004
  • To improve the quality of Gulbi, 10% garlic juice (GJ), 10% onion juice (OJ), and 10% garlic and onion juice mixture (GOJ) were added to the brine solution as a wet-salting method. The changes of total volatile basic nitrogen (TVB-N) and trimethyl amine (TMA) production, thiobarbituric acid reactive substance (TBARS) value, and total microbial numbers in Gulbi were analyzed during storage at room temperature for 12 days. The group treated with 10% GOJ showed the lowest values of 88.2 mg/l00 g in TVB-N, 14.13 mg/l00 g in TMA, and 3.1 $\mu$mol/kg in TBARS. The fatty acid profile of Gulbi was analyzed on 5, 15, and 30 days to investigate the effect of GOJ treatment. The group treated with GOJ showed higher C22:6 (9.91%) and C20:5 (4.25%) contents than control (7.37% and 3.71%, respectively), but had lower C18:1 (24.44%) content. The saturated fatty acid content in Gulbi was 32∼35% and the C16:0 (21∼23%) was predominant in it. Oleic acid was major unsaturated fatty acid in Gulbi. The contents of polyunsaturated fatty acids (C18:3, C20:5, C22:6) were decreased after 30 days but increased the saturated fatty acid (C16:0) and monoenes (C16:1 and C18:1). The Gulbi treated with GOJ by brine salting method showed higher DHA and EPA (9.91% and 4.25%, respectively) contents than the control group.

At slaughtering and post mortem characteristics on Traditional market ewes and Halal market ewes in Tuscany

  • Sargentini, Clara;Tocci, Roberto;Campostrini, Matteo;Pippi, Eleonora;Iaconisi, Valeria
    • Journal of Animal Science and Technology
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    • v.58 no.9
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    • pp.35.1-35.10
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    • 2016
  • Background: The aim of this work was the comparison between the carcass and the meat ewes of the regional Traditional market and the Islamic religious (Halal) market. Methods: Thirty and 20 at the end of career traditional market and Halal market ewes were slaughtered following the EC (European Council, 2009) animal welfare guidelines. Live weight of ewes was taken and dressing percentage of carcasses was calculated. On every carcass zoometric measurement and the evaluation trough the EU grid rules were performed. On the Musculus longissimus thoracis of 12 Traditional market carcasses and 11 Halal market carcasses the physical-chemical and nutritional analysis were performed. Consumer tests for liking meat ewe were performed in order to find consumer's preference level for Traditional and Halal markets ewe meat. Considering as fixed factor the ewe meat market (Traditional and Halal), results were submitted to oneway Analysis of Variance (ANOVA) and to Principal Component Analysis (PCA). Results: The Halal market ewes have shown lower dressing percentages ($42.91{\pm}0.82$ vs $46.42{\pm}0.69$) and lower conformation score ($4.5{\pm}0.5$ vs $7.8{\pm}0.4$). The Halal market meat showed higher cooking loss in oven ($37.83{\pm}1.20$ vs $32.03{\pm}1.15%$), lesser Chroma value ($18.63{\pm}0.70$ vs $21.84{\pm}0.67$), and lesser Hue angle value ($0.26{\pm}0.02$ vs $0.34{\pm}0.02$). This product had also lower fat percentage ($4.2{\pm}0.4$ vs $7.09{\pm}0.4$). The traditional market meat had higher percentage in monounsatured fatty acids (MUFA) ($43.84{\pm}1.05$ vs $38.22{\pm}1.10$), while the Halal market meat had higher percentage in ${\omega}3$ poliunsatured fatty acids (PUFA) ($5.04{\pm}0.42$ vs $3.60{\pm}0.40$). The consumer test showed as the ewe meat was appreciate by the consumers. Conclusions: Both meat typologies have shown good nutritional characteristics. The traditional market meat had higher MUFA composition, and a better MUFA/satured fatty acids (SFA) ratio, while the Halal market meat had higher PUFA composition. These results were also supported by the PCA. The consumers preferred the traditional market meat.