• 한국식품영양과학회지
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• 제28권6호
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• pp.1310-1315
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• 1999

Polyphenolic compounds widely occurring in the traditional medicine plants have been reported to possess strong antioxidant activity. The antioxidative substances of water soluble extract from leaves, stem bark, root bark and fruit powder of Cudrania tricuspidata were tested in three different in vitro experimental models. In oxidation models using DPPH( , ' diphenyl picrylhydrazyl) method, Fe2+ induced linoleic acid peroxidation, and autooxidation of hepatic microsomal membranes, the antioxidative activities of water soluble extract from stem bark were strong than that from leaves and root bark. Fruits of Cudrania tricuspidata contained the highest amounts of polyphenolic compounds among the parts of this plant. The changes in polyphenolic compound contents of fruit powder caused by heat treatment (20oC, 40oC, and 60oC) were also monitored. After water blanching, contents of phenolic compounds was increased slightly in the following order; 20oC(1454mg), 40oC(1487mg), and 60oC(1511mg). These results supports that water soluble extracts from Cudrania tricuspidata contain antioxidative compounds.

• 한국의류학회지
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• 제22권4호
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• pp.477-481
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• 1998

Colored components in black tea were extracted, freeze-dried, and analysed to investigate the possibility using as a natural dye. Fractionation of the colored components was carried out by gel permeation chromatography. The colored components in black tea were elected into seven fractions. Each fraction was analyzed by UV spectrophotometer. The early fluted fractions 1-4 did not show any absorption peaks in 320-700 nm and showed the increase in absorption as it approaches to short wavelength and are considered as highly polymerized colored substances. Fractions 5-6 showed tar at 350 m and are considered as thearubigins. Fraction 7 showed absorption peaks at 376 nm and 456 nm and is considered as theaflavin. IR spectra of each fraction show: Strong C=0 stretching band at 1650 cm-1 appears in fractions 1-4, but not in fractions 5-7. Strong C=0 stretching band at 1700 cm-L appears in fraction 3-7. C=0 stretching band at 1610 cm-1 appears as a shoulder in fraction 4 and progressively changes into strong peak in fraction 5-7. From these results, it is assumed that colored components in black tea consist of polyphenolic substances having different molecular weight which were formed during tea manufacturing process. The colorants from black tea infusion were applied to silk, wool, cotton and nylon fabrics. Black tea colorants showed high affinity to wool, silk and nylon, but very low affinity to cotton fabrics.

• 한국잡초학회지
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• 제17권3호
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• pp.334-344
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• 1997

라일락 잎에 함유되어 있는 생리활성물질(生理活性物質)을 검정(檢定)코저 수행한 본 실험(實驗)의 결과(結果)를 요약(要約)하면 다음과 같다. 1. 침적과 Leaching법으로 추출(抽出)한 라일락 잎 수용 추출물의 식물 생육 억제효과를 검정해 본 결과, 바랭이와 상추의 발아율에 영향을 주었으며, 초장보다 뿌리에 더 큰 억제현상을 보여 1차적인 생리활성효과를 검정할 수 있었다. 2. 라일락 잎의 페놀, 그리고 폴리페놀성 성분을 분석한 결과, p-coumaric acid, salicylic acid, pyrogallol 및 catechol의 높은 비율이 동정되었고, 폴리페놀성 물질로는 rutin, chlorogenic acid, kaempferol 및 scopoletin 등이 각각 검정되었다. 3. 표준페놀물질인 pyrogallol과 catechol은 공시식물의 생육에 통계적으로 유의한 억제효과를 보였고, 특히 수용성인 pyrogallol $10^{-6}M$과 catechol의 혼합처리에서 억제효과가 크게 나타났다.

• 한국식품영양학회지
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• 제30권2호
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• pp.181-190
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• 2017

Functional foods are of great significance since our society is accelerating into aging. An aging society has many physiological metabolic diseases such as hypertension, diabetes, heart disease, cancer, dementia and geriatric diseases. Fundamental treatments for the elderly are almost impossible and the social burden is heavy. If these diseases can be prevented or alleviated by improving dietary habits using functional foods, the significance would be very large. Pomegranate has been found to have 124 different kinds of phytochemicals. Polyphenols have a wide range of protective effects including various physiological metabolic diseases and cancers. It is necessary to develop functional foods such as preservatives and food extenders which can contribute to food safety, required in the food industry, by using such bioactive substances. Pomegranates have been reported to decrease the impact of many serious illnesses. There is a considerable amount of bioactive substances in the peel of a pomegranate, which has potent anticancer, antioxidant, antimicrobial and anti-apoptotic properties. Unfortunately, the peel is typically discarded after processing. Despite knowledge regarding the bioactive substances in the pomegranate peel and peel extracts, including their functionality and diversity, the knowledge is not well known by consumers in general. The aim of this study was to review up to date research trends for processing and developing new functional foods by utilizing nutritional functional substances, favourite food materials, and materials for processing food contained in pomegranate peels and pomegranate peel extracts. This study will summarize the data found in pomegranate peel and pomegranate peel extract literature mainly recently published in Science Direct. There are polyphenolic compounds (ellagitannins, punicalagin, proanthocyanidin, flavonoids, polysaccharides, etc.) in the fruit peel, making up about 50% of the pomegranate's weight. The polyphenol content of a pomegranate fruit peel is 149.91 mg/g, which is about 100 times higher than the juice. Paying attention to the fact that the ellagitannin content (14.22 mg/g) in the fruit peel is also twice as high as that of the fruit juice and seeds, that confirms the possibility of utilizing the peel as a food ingredient capable of developing new, functional bioactive foods.

• 한국산업안전학회:학술대회논문집
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• 한국안전학회 1998년도 추계 학술논문발표회 논문집
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• pp.89-92
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• 1998

Tannins are complex polyphenolic substances present in plants. They may be classified as either hydrolysable or condensed tannins, and extracts of the latter type have displayed carcinogenic properties in animal studies (Hausen, 1981). The International Agency for Research on Cancer has determined that exposure to airborne wood dust, especially hardwood dust during furniture manufacture, is a cause of sino-nasal cancer, notably nasal adenocarcinoma. (omitted)

• 한국식품영양학회지
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• 제20권4호
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• pp.356-362
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• 2007

This study was carried to develop the new material of functional food which antioxidant of natural substances of sprouts. We compared antioxdiative activity and antioxidant substances exist in sprouts. Antioxidaive activities of sprouts were measured by total polyphenolic acid contents, electron donating activity(EDA), SOD-liked activity and hydroxyl radical scavenging ability. Total polyphenolic acid content was very higher in Rape sprouts extract(Rap) than other sprout extracts. Also Rape extract was showed the most excellent antioxdiative activity in SOD liked activity at 86.94%. The EDA was ordered Rape sprouts extract(Rap)>Tatsoi sprouts extract(Tat)>Broccoli sprouts extract(Bro)>Alfalfa sprout extract(Alf). Hydroxy radical scavenging ability was the most effective in Rape sprouts extract(Rap). Therefore we could be certain that Rape sprouts extract(Rap) was the most effective in antioxidative activity from sprouts.

• 한국식품저장유통학회지
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• 제8권2호
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• pp.231-238
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• 2001

The concentrations of total polyohenolic compound from extract of Paulownia tomentosa Stued. were water-soluble extract 7.98%, methanol extract 12.30% and ethanol extract 11.63%. The free radical scavenger activities of three extracts at the levels of 0.5% were higher than that of BHT(butylated hydroxytoluene). In antioxidative activities measured the concentrations of TBARS(thiobabituric acid reactive substances) in tissues microsome induced with Fe$\^$++/ascorbate, the water-soluble extract was errdctively suppressed in liver and spleen. In antioxidative activities determined by thiocyanate method against lipid peroxidation using linoleic acid, the methanol extract showed the higher compared with other extracts, but BHT showed the highest antioxidative activity. These results suggest that fruit extracts of Paulownia tomentosa Stued. showed to have relatively high concentrations of polyphenolic compounds and antioxidative activities.

• 생약학회지
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• 제9권2호
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• pp.83-88
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• 1978

From phytochemical screening of the seven species of Caryophyllaceae, that is, one species of Melandrium, and Dianthus and Pseudostellaria, two species of Stellaria and Cerastium the following compounds were identified. 1) aldehyde, sugars, other reducing compounds and glycosides from the above mentioned seven species of Caryophyllaceae were identified by thin layer chromatography method and comparison of Rf values with the standard substances. 2) Saponins, steroids and terpenoids showed positive reaction with the Froth testing in all of seven plants. Five species of plant showed positive reaction with Liebermann-Buchard test. 3) Flavonoid and polyphenolic compounds were identified by the spots in TLC-test and chlorogenic acid showed the same Rf values with the standard substances. 4) The spots of alkaloid were shown at Rf=0.68 (Stellaria aquatica) and at Rf=0.71 (Pseudostellaria palibiniana) and at Rf=0.70, and 0.44 (Dianthus sinensis).

• 동아시아식생활학회지
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• 제12권1호
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• pp.23-31
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• 2002

한약재를 기능성 식품에 이용하기 위하여 한약재의 생리활성 인자를 탐색할 목적으로 한약방에서 널리 이용되고 있는 황기(Astragalus membranaceus Bunge), 국화(Chrysanthemum morrifolium Ramat), 구기자(Lycium chinensis Miller), 감초(Glycyrrhiza uralensis Fischer), 당귀(Angelica gigas Nakai), 대추(Zizyphus jujuba Miller), 작약(Paeonia lactiflora Pallas), 천궁(Cnidium officinale Makino)을 물과 에탄올로 추출하여 항산화 활성을 DPPH법, SOD유사활성 측정법, thiocyanate법 및 TBARS법으로 측정하였다. 에탄을 추출물에 비하여 물 추출물의 페놀성 화합물의 함량이 높게 나타났으며, 구기자 물 추출물의 함량이 1.66%로 가장 높게 나타났다. 물 추출물 중 국화는 63.0% 그리고 에탄을 추출물 중 감초가 63.8%으로 BHT의 전자공여능(49.7%) 보다 높게 나타냈으며, SOD 유사활성은 물 추출물 중 황기에서 41.8%의 높은 활성능을 보였으며 에탄을 추출물 중 구기자에 38.2%의 높은 활성능을 보였다. 물 추출물 중 감초와 대추가 에탄을 추출물 중에는 당귀와 국화의 TBARS 값이 대조구에 비하여 5.0이상으로 항산화 활성이 BHT의 항산화 활성과 비슷하게 나타났으며, Thiocyanate법에의한 항산화 활성은 대조구와 비교하여 국화, 구기자, 감초, 작약의 물 추출물의 유도기간이 8일까지 연장되는 것을 볼 수 있으며 에탄을 추출물 중에는 감초와 국화의 유도기간이 8일가지 연장되었다. 이상의 결과에서 황기, 국화, 구기자, 감초, 당귀, 대추, 작약, 천궁의 물과 에탄을 추출물 중에는 in vitro 항산화 실험 계에서 항산화 활성을 나타내는 생리활성 성분이 있는 것으로 나타났다.

• 동국한의학연구소논문집
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• 제11권
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• pp.41-51
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• 2008

Dietary supplements are used by more than one-half of the adult US population. By contrast, herbal products in Germany are carefully regulated by the same standards as drugs, and efforts are under way to standardize their regulation in the entire European Union. Most herbal users do not inform their physicians that they are taking these supplements, and most physicians do not inquire. Although some herbal products have clinically proven benefits, it is increasingly apparent that many contain potentially toxic substances, particularly in relation to interactions with drugs. Hence, it is essential that practicing physicians develop a working knowledge of herbals-specifically, about claims for their usage and potential or proven efficacies and toxicities-and that they incorporate such knowledge into the evaluation and management of their patients. By contrast, functional foods-integral components of the diet that are understood to contribute added health benefits-are the subject of intense and widespread research in food and nutritional science. Examples include many polyphenolic substances, carotenoids, soy isoflavones, fish oils, and components of nuts that possess antioxidant and other properties that decrease the risk of vascular diseases and cancer. Practicing physicians are advised to stay abreast of these emerging findings in order to best advise their patients on the value of health-promoting diets in disease prevention.