• Title/Summary/Keyword: food and nutrition articles

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Formation and Inhibition of Cholesterol Oxidation Products (COPs) in Foods; An Overview (식품 내 콜레스테롤 산화 생성물(COPs)의 생성 및 억제; 개요)

  • Joo-Shin Kim
    • Journal of the Korean Applied Science and Technology
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    • v.40 no.5
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    • pp.1163-1175
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    • 2023
  • Cholesterol is prone to oxidation, which results in the formation of cholesterol oxidation products (COPs). This occurs because it is a monounsaturated lipid with a double bond on C-5 position. Cholesterol in foods is mostly non-enzymatically oxidized by reactive oxygen species (ROS)-mediated auto-oxidative reaction. The COPs are found in many common foods of animal-origin and are formed during their manufacture process. The formation of COPs is mainly related to the temperature and the heating time the food is processed, storage condition, light exposure and level of activator present such as free radical. The level of COPs in processed foods could reach up to 1-10 % of the total cholesterol depending on the foods. The most predominant COPs in foods including meat, eggs, dairy products as well as other foods of animal origin were 7-ketocholesterol, 7 α-hydroxycholesterol (7α-OH), 7β-hydroxycholesterol (7β-OH), 5,6α-epoxycholesterol (5,6α-EP), 5,6β-epoxycholesterol (5,6β-EP), 25-hydoxycholesterol (25-OH), 20-hydroxycholesterol (20-OH) and cholestanetriol (triol). They are mainly formed non-enzymatically by cholesterol autoxidation. The COPs are known to be potentially more hazardous to human health than pure cholesterol. The procedure to block cholesterol oxidation in foods should be similar to that of lipid oxidation inhibition since both cholesterol and lipid oxidation go through the same free radical mechanism. The formation of COPs in foods can be stopped by decreasing heating time and temperature, controlling storage condition as well as adding antioxidants into food products. This review aims to present, discuss and respond to articles and studies published on the topics of the formation and inhibition of COPs in foods and key factors that might affect cholesterol oxidation. This review may be used as a basic guide to control the formation of COPs in the food industry.

Five Views on RAMYEON -Focusing on the Analysis of Newspaper Articles from 1963 to 2012- (라면을 보는 5가지 시각 -기사분석을 중심으로-)

  • An, HyoJin;Oh, Se-Young
    • The Journal of the Korea Contents Association
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    • v.18 no.9
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    • pp.633-647
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    • 2018
  • Ramyeon is a wheat-food that has been mixed a dietary culture of China, Japan, American and Korea. Simultaneously it was the first convenience food that made of flour in Korea, which had been relatively few recipes until the early 1960's. To examine the changes of Ramyeon which has been consumed in large quantities since the late 1960s, this paper classified 1963~2012 into 6 periods. From political, economic, social, cultural and international perspectives we considered the changes of Ramyeon through the articles analysis of mass media(DongaIlbo, The KyunghyangShinmun, MBC news). The total number of articles was 3,823 with an average of 76.46/y. Each field was summarized as following sub-topics; In political(Election, North Korea), in economic(Price, Economy), in social(Promotion campaign for eating of flour, Incidents, Donation), in cultural(Consumption, Extreme situations, Nutrition) and in international field(Exporting). Each period was named according to the feature; Early stage, Expansion stage, Domestic growth stage, Overseas stage, Advanced stage, Transition stage. Ramyeon has changed in a closely relation with society for past 50 years.

Analysis of Current Status of Marine Products and Characteristics of Processed Products Seafood in Joseon - via the Veritable Records of the Joseon Dynasty based data - (『조선왕조실록(朝鮮王朝實錄)』 속 수산물 현황과 가공식품 특성 분석)

  • Kim, Mi-Hye
    • Journal of the Korean Society of Food Culture
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    • v.37 no.1
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    • pp.26-38
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    • 2022
  • This study used the big data method to analyze the chronological frequency of seafood appearance and variety mentioned by the veritable records of the Joseon dynasty. The findings will be used as a basis for Joseon Period's food cultural research. The web-crawling method was used to digitally scrap from the veritable records of the Joseon dynasty of Joseon's first to the twenty-seventh king. A total of 9,536 cases indicated the appearance of seafood out of the 384,582 articles. Seafood were termed "seafood" as a collective noun 107 times (1.12%), 27 types of fish 8,372 times (87.79%), 3 types of mollusca (1.28%), 18 types of shellfish 213 times (2.23%), 6 types of crustacean 188 times (1.97%), 9 types of seaweed 534 times (5.60%). Fish appeared most frequently out of all the recorded seafood. Sea fish appeared more frequently than the freshwater fish. Kings that showed the most Strong Interest Inventory (SII) were: Sungjong from the 15thcentury, Sehjo from the 15th, Youngjo from the 18th, Sehjong from the 15th, and Jungjo from the 18th respectively. Kings of Chosen were most interested in seafood in the 15th and 18th centuries.

A Literature Review on the Types and Cooking Methods for Joseon Dynasty Tteok (Korean Rice Cake) according to its Sub-Ingredients (부재료에 따른 조선시대 떡류의 종류 및 조리방법에 대한 문헌적 고찰)

  • Oh, Soon-Duk;Lee, Gui-Chu
    • Journal of the Korean Society of Food Culture
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    • v.25 no.5
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    • pp.525-543
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    • 2010
  • This article examines the types and cooking methods for tteok (Korean rice cake) according to its sub-ingredients, as recorded in 18 old literatures of the Joseon dynasty (1392~1909). The sub-ingredients used in tteok during the Joseon dynasty were categorized into flowers, fruits, vegetables, Korean typical medicinal plants, and others. In the early, middle, and late eras of the Joseon dynasty, one, six, and 14 kinds of tteok were prepared using flowers as the sub-ingredient and two, seven, and 32 kinds of tteok were prepared using fruits, respectively. Three, seven, and 38 kinds of Tteok were prepared using vegetables as the sub-ingredient, while there were three, five and 15 kinds tteok prepared using Korean medicinal plants, respectively. One, five, and 13 kinds of tteok were prepared using other ingredients such as fish and seogi mushrooms in the early, middle, and late eras of the Joseon dynasty, respectively. The types of sub-ingredients and the resulting types of tteok increased throughout the Joseon dynasty, indicating that flowers and vegetables were preferred the most among tteok sub-ingredients. Tteoks using flower as the sub-ingredient, whajeon, were mostly jijin-tteok. The types of tteok and cooking methods using other sub-ingredients were discussed in terms of the type of sub-ingredients and their treatment to prepare tteok. The sub-ingredients were mixed with flour, which was the main ingredient for preparing tteok, or ground and shredded to prepare gomul for decorating and stuffing tteok, respectively. It seemed that the appearance and taste of tteok varied, thereby resulting in nutrient supplementation as the kinds of sub-ingredients increased throughout the Joseon dynasty. We expect that the recipes and ingredients as well as the cooking methods recorded in these old articles will contribute to those looking for a healthy life and, furthermore, to the globalization of tteok.

The Clinical Effects of Dendropanax Morbifera on Postmenopausal Symptoms: Review Article

  • Kim, Mijin;Park, Yoo Jin;Lim, Hee-Sook;Lee, Hae-Hyeog;Kim, Tae-Hee;Lee, Bora
    • Journal of Menopausal Medicine
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    • v.23 no.3
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    • pp.146-155
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    • 2017
  • Postmenopausal women aged 50s generally experience gradual changes in body such as decline in antioxidant and estrogen levels as the body ages. To overcome these aging-associated changes, the needs for health functional foods are increasing. Dendropanax morbifera (DM) have antioxidant effects, anti-inflammatory against cancer cells, antidiabetic, and antiatherogenic effect which are associated with postmenopausal symptoms. We analyzed clinical effects of DM on aging-related symptoms by reporting their antioxidant, anticancer and inflammatory activity, etc. and their bioactivity. Data sources EMBASE, SCOPUS, PubMed, Web of Science, and Google Scholar databases were searched up to August 2016 for studies investigating medicinal plants in prevention and treatment of diabetes. The search terms were "Dendropanax morbifera". The reference lists of articles were also reviewed for additional relevant studies. Extracts of DM have various efficacy such as antioxidant, anti-cancer, anti-inflammatory activity and anti-thrombotic effect.

Performance, Egg Quality, and Immunity of Laying Hens due to Natural Carotenoid Supplementation: A Meta-Analysis

  • Fitri Yunitasari;Anuraga Jayanegara;Niken Ulupi
    • Food Science of Animal Resources
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    • v.43 no.2
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    • pp.282-304
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    • 2023
  • This study aimed to investigate the effectiveness of carotenoid supplementation on the performance, egg quality, and immunity of laying hens using a meta-analysis approach. The database was searched using Google Scholar and Scopus, from 2012 to 2022. The literature was published in English. 47 Articles were selected for meta-analysis. Analyses were performed using the Open Meta-analyst for Ecology and Evolution (OpenMEE) software. The heterogeneity and data validation against publication bias were analyzed using JASP 0.16.2 software. Overall, the results showed that carotenoid supplementation improved feed intake by 0.32 g/day/hen [95% confidence interval (CI)=0.02 to 0.61], final body weight by 0.33 g/hen (95% CI=0.05 to 0.60), egg production by 0.38% (95% CI=0.14 to 0.63), egg weight by 0.29 g (95% CI=0.09 to 0.5), yolk colour by 2.11 (95% CI=1.71 to 2.51), Haugh unit (HU) by 0.26 (95% CI=0.11 to 0.42), yolk carotenoids by 1.17 ㎍/kg (95% CI=0.59 to 1.75), immunoglobulin A (IgA) by 0.74 mg/L (95% CI=0.18 to 1.29), and lower yolk cholesterol by -0.38 mg/g (95% CI=-0.59 to -0.16). Feed conversion ratio (FCR), eggshell thickness, and white blood cells were unaffected by the application of carotenoids. The heterogeneity analysis showed variability in all studies (<0.05). In conclusion, carotenoid supplementation can elevate productivity, enhance egg quality, and improve immunity. However, based on Kendall's test, there was a publication bias in several parameters, namely FCR, egg weight, HU, yolk carotenoids, and IgA.

Relationships between dietary rumen-protected lysine and methionine with the lactational performance of dairy cows - A meta-analysis

  • Agung Irawan;Ahmad Sofyan;Teguh Wahyono;Muhammad Ainsyar Harahap;Andi Febrisiantosa;Awistaros Angger Sakti;Hendra Herdian;Anuraga Jayanegara
    • Animal Bioscience
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    • v.36 no.11
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    • pp.1666-1684
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    • 2023
  • Objective: Our objective was to examine the relationships of supplemental rumen-protected lysine (RPL) or lysine + methionine (RPLM) on lactational performance, plasma amino acids (AA) concentration, and nitrogen use efficiency of lactating dairy cows by using a meta-analysis approach. Methods: A total of 56 articles comprising 77 experiments with either RPL or RPLM supplementation were selected and analyzed using a mixed model methodology by considering the treatments and other potential covariates as fixed effects and different experiments as random effects. Results: In early lactating cows, milk yield was linearly increased by RPL (β1 = 0.013; p<0.001) and RPLM (β1 = 0.014; p<0.028) but 3.5% fat-corrected milk (FCM) and energy-corrected milk (ECM) (kg/d) was increased by only RPL. RPL and RPLM did not affect dry matter intake (DMI) but positively increased (p<0.05) dairy efficiency (Milk yield/DMI and ECM/DMI). As a percentage, milk fat, protein, and lactose were unchanged by RPL or RPLM but the yield of all components was increased (p<0.05) by feeding RPL while only milk protein was increased by feeding RPLM. Plasma Lys concentration was linearly increased (p<0.05) with increasing supplemental RPL while plasma Met increased (p<0.05) by RPLM supplementation. The increase in plasma Lys had a strong linear relationship (R2 = 0.693 in the RPL dataset and R2 = 0.769 in the RPLM dataset) on milk protein synthesis (g/d) during early lactation. Nitrogen metabolism parameters were not affected by feeding RPL or RPLM, either top-dress or when supplemented to deficient diets. Lactation performance did not differ between AA-deficient or AA-adequate diets in response to RPL or RPLM supplementation. Conclusion: RPL or RPLM showed a positive linear relationship on the lactational performance of dairy cows whereas greater improvement effects were observed during early lactation. Supplementing RPL or RPLM is recommended on deficient-AA diet but not on adequate-AA diet.

A Study on the Vegetables Mentioned in the Bible (성서에 언급된 채소류에 관한 연구)

  • Woo, Ja-Won
    • Journal of the Korean Society of Food Culture
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    • v.22 no.1
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    • pp.1-9
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    • 2007
  • This paper is intended to study what kinds of the vegetables are mentioned in the Bible and how they were used in those days. While one hundred and twenty-eight different plants are mentioned in the Bible, there are today 2,384 plant species in modem Israel, most of which have been introduced in recent centuries. These plants obviously did not exist there in biblical times and were only recently introduced from Australia and South America, respectively. This article will study only the vegetables mentioned in the Bible and known to have existed in the old and new testament times. Since the first book devoted exclusively to biblical botany was that of Levinus Lemmens in 1566, the modem systematic study of biblical plants, began with F. Hasselquist, a student of Linnaeus, the founder of modem botany. In 1928, Immanuel Loew approached the subject differently, reviewing all known data pertaining to biblical plants. His work not only discussed biblical plants, but also plants in later Jewish literature, particularly the Talmud. The British scholar G. E. Post provided a broad field study of modem plants in Palestine, Syria, Lebanon, and Jordan. More recent major treatments of the subject include those of A. and H. Moldenke (1952), M. Zohary (1982), N. Hareuveni (1984), and Y. J. Choi(1996). Today, articles on specific biblical plants listed in the Bible can be found in any number of encyclopedias. This study attempts to provide a synthesis of the work of a number of scholars who studied the vegetables and plants mentioned in the Bible. As a preliminary study on the culture of food in the biblical period, this study has focused on the identity and features of the vegetables of the Bible. In only a limited number of instances, because of the paucity of the informations and the broad and generic descriptions of the plants, we can't be certain about the identification of the vegetables named in the Bible. In many instances the traditions established by the Greek, Aramaic, and English translations are helpful, although sometimes they are misleading. This paper subdivides the vegetables into broad areas, the general vegetables and the flavoring herbs. Vegetables formed very important part of the diet in the biblical times. Two main types were used: those whose nutritious seeds could be easily stored and those which were eaten freshly gathered from gardens. Pulse seeds provided a useful source of vegetable protein, while fresh green vegetables were vitamin rich. Pulses could be eaten boiled, or their dried seeds could be ground up into flour and then made into nutritious soups. Fresh vegetables were eaten either raw or lightly cooked, usually by boiling in water. The general vegetables in the Bible are herbs(garden rocket), cucumber(snake cucumber), watermelon, leeks, chicory, and onions. Also the flavoring herbs in the Bible are rue, dill, cummin, black cummin, frankincense, cinnamon, cassia, myrrh, black mustard, coriander, mint, saffron, ginger grass, syrian hyssop, aloes(eagle wood), manna which have the flavor, aroma, and medical values.

Determination of Preservatives in Raw Materials of Functional Foods by HPLC-PDA and GC-FID (HPLC 및 GC를 이용한 건강기능식품 원료 중 보존료 함유량 조사)

  • Kim, Jung-Bok;Kim, Myung-Chul;Song, Sung-Woan;Shin, Jae-Wook
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.46 no.3
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    • pp.358-367
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    • 2017
  • Preservatives, as food additives, are occasionally intrinsic to natural raw materials or sometimes generated during the fermentation process as reported in many research articles. Preservative compounds in raw food materials may persist in the final food product, which is not supposed to include such preservative compounds. In this study, we validated an analytical method for preservative compounds in raw materials of functional foods. Quantification of benzoic acid and sorbic acid was determined using HPLC-PDA analysis after distillation, whereas propionic acid was quantified with GC-FID. A significant set of validation data (accuracy, precision, linearity, recovery, etc) was acquired. A total of 212 samples were collected for analysis of naturally occurred preservatives, and preservatives were detected in 85 samples. Most of the detected samples showed less 10 mg/kg of preservatives. The results of this study provide fundamental data on naturally occurring preservatives in raw materials of functional foods. Moreover, building up a database of naturally occurring preservatives could solve problems in the current scientific data.

Therapeutic Effect of Hovenia dulcis Thunberg Extracts and 6 Types Herbal Extracts on $CCl_4-induced$ Chronic Organ Damages in the Rats-Liver and Kidney (Carbon Tetrachlorid으로 유발된 Rat의 만성 장기(간, 신장) 손상시 헛개나무열매 추출물등 6종 생약의 투여시 조직병리학적변화)

  • Lim, Mee-Kyoung;Kim, Joo-Wan;Kim, Hong-Tae;Lee, Byoung-Je;Ku, Sae-Kwang;Kang, Mi-Young;Lee, Keun-Woo
    • Journal of Veterinary Clinics
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    • v.24 no.3
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    • pp.384-391
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    • 2007
  • This study was conducted to clarify the effects of the Korean raisin (Hovenia dulcis Thunb) extracts and polyherbal extracts consisted of 6 types herbal extracts including HDT (HDTmix) on $CCl_4$ induced organ damages. Extracts were prepared by autoclave ($121^{\circ}C$, 15 psi, 3 hours) and filtered with nylon cloth and filter paper then freezing dried. Male Sprague-Dawley rats $(200^{\circ}{\ae}20g)$ were used as experimental groups, which were divided into 5 groups; intact control group (100 mg/kg), $CCl_4$ dosing group (100 mg/kg), $CCl_4$ dosing after HDT extract dosing group (100 mg/kg), $CCl_4$ dosing after HDTmix dosing group (100 mg/kg), Silymarin dosing group (5 mg/kg) after all test articles were orally dosed once a day for 28 days. They were sacrifiled under ether anesthesia. HDT extracts and HDTmix dramatically inhibits the $CCl_4$ intoxicated hepato/nephropathies with immuno-suppress changes on the spleen. They showed more dramatical protective effects on most of specific organs compared to that of Silymarin 5 mg/kg except for hepatoprotective effects in which, quite similar effects were detected. In addition, HDT extracts showed synergic effects with other types of herbal extracts because HDTmix showed more favorable protective effects on the all specific organs showing $CCl_4-related$ histopathological changes compared to HDT extracts.