• Title/Summary/Keyword: dried fruits

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The Promise of Dried Fruits in Cancer Chemoprevention

  • Kundu, Joydeb Kumar;Chun, Kyung-Soo
    • Asian Pacific Journal of Cancer Prevention
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    • v.15 no.8
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    • pp.3343-3352
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    • 2014
  • Chemoprevention is an attempt to use nontoxic natural and synthetic substances or their mixtures to intervene the relatively early stages of carcinogenesis, before invasive characteristics are manifested. The consumption of fruits is well known to reduce the risk of human cancers. Although most fruits are available only on a seasonal basis, recent advances in food processing technologies have made it possible to extend the shelf life of fruits and fruit-products. Fruits can be preserved by applying different drying processes to reduce the moisture content. Different varieties of dried fruits are now sold in supermarkets, thereby making them readily accessible to consumers. Since oxidative stress and chronic inflammation play important roles in cancer development, dried fruits with antioxidative and anti-inflammatory properties hold promise for cancer chemoprevention. The antioxidant, anti-inflammatory and chemopreventive activities of dried fruits are largely attributed to their polyphenols and vitamins. Dried fruits contain adequate amounts of bioactive principles, such as anthocyanins, acetogenins, catechins, coumarins, phenolic acids, terpenes, xanthones, and others. Since numerous health beneficial phytochemicals in fruits are conserved even after processing, regular intake of dried fruits can help prevent cancer. This review addresses the chemopreventive potential of representative dried fruits and their active constituents.

Detection of Gamma-Irradiated Dried Fruits by Measuring of Free Radicals (Free Radical의 측정을 통한 감마선 조사 건조과일의 검지)

  • Nam, Hye-Seon;Ly, Sun-Yung;Yang, Jae-Seung
    • Korean Journal of Food Science and Technology
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    • v.33 no.4
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    • pp.423-426
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    • 2001
  • Electron spin resonance (ESR) spectroscopy was used to investigate the effect of irradiation dose on irradiated dried fruits. Dried banana, pineapple and pistachio were irradiated with doses of 0, 0.5, 1, 2 and 5 kGy at room temperature using a Co-60 irradiator. Multiplet ESR signals were observed in irradiated dried banana and pineapple, and singlet ESR signal was observed in irradiated pistachio, while these characteristic signals were not detected in non-irradiated samples. Since the amount of free radicals linearly increased with the applied doses $(0.5{\sim}5\;kGy)$, highly positive correlation coefficients $(R^2=0.9874{\sim}0.9974)$ were obtained between the irradiation doses and the corresponding free radical concentrations. The characteristic ESR signals were observed in irradiated samples even after 40 days of storage at room temperature.

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Detection Properties of Irradiated Dried Fruits by Using Photo-stimulated Luminescence, Thermoluminescence, and Electronspin Resonance Methods (물리적인 방법(PSL, TL, ESR)을 이용한 방사선 조사 건조과일의 검지 특성)

  • Yoon, Young-Min;Park, Jae-Nam;Choi, Soo-Jeong;Park, Jong-Heum;Kim, Jae-Kyung;Byun, Eui-Baek;Lee, Ju-Woon;Han, In-Jun;Park, Jin-Gyu;Kim, Jae-Hun;Song, Beom-Seok
    • Journal of Radiation Industry
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    • v.8 no.1
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    • pp.11-15
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    • 2014
  • In this study, we investigated the applicability of the photostimulated luminescence (PSL), thermoluminescence (TL) and electron spin resonance (ESR) methods for freeze dried fruits which are not allowed to be irradiated in Korea. Apples and persimmons samples that had been dried with a freeze drier were irradiated at a dose of 1, 3, 5, 7, and 10 kGy, using a gamma radiator with a cobalt-60 source. With the PSL method, the dried apples showed photon counts of less then 700 counts/60 s (negative) in all the samples, whereas the dried persimmons that were gamma-irradiated above 3 kGy yielded photon counts of between 700 and 5,000 counts/60 s (intermediate). The TL results showed that this technique is useful for detecting irradiated samples; the TL ratios ($TL_1/TL_2$) measured for the food samples at an irradiation dose of 1 kGy were 0.13 for dried apples and 0.79 for dried persimmons. With regard to the results of ESR spectroscopy, the strength of the ESR signals from the dried fruits increased linearly in a dosedependent manner. However, the characteristic signal was not found in all the samples. In conclusion, the TL methods only can be used for the detection of gamma-irradiated dried apples and persimmons.

Analysis on Pesticide Residue in Medicinal Dried Fruits (약용건조과실류의 잔류농약분석)

  • Lee, Kyeong-Ah;Kang, Sung-Tae;Kim, Ouk-Hee;Park, Sung-Kyu;Ha, Kwang-Tae;Choi, Young-Hee;Jo, Han-Bin;Choi, Byung-Hymn
    • The Korean Journal of Pesticide Science
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    • v.14 no.3
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    • pp.209-218
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    • 2010
  • There experiment were carried out to analyze for pesticide residues in 4 kinds of dried fruits collected in northern area of Seoul in 2007~2009. Total of 213 samples were analyzed. According to the results, 20 kinds of residual pesticides were detected. Residual pesticides were detected in 66 samples (31.0%) and 8 samples (3.8%) exceeded maximum residue limits (MRL). Cypermethrin, fenvalerate, endosulfan, chlorpyrifos, bifenthrin were detected frequently. The Pesticide types which were detected in dried furits were revealed in order of pyrethroid > organophosphate > organochloride > dicarboximide. Detection rates of dried fruits were dried chinese matrimony vein (53.0%), dried jujube (34.9%), dried rubi fructus (7.6%) and dried maximowiczia chinensis (4.6%). Based on these results, we investigated the risk assessment from amount of residual pesticide in dried jujube. Range of %ADI were 0.0001~0.0081%, but the value has not effected on human health.

A Study on the Function of "Chang-Won-Seo" as a Government Organization in charge of Landscape Architecture during Chosun-Dynasty (조선시대 조경행정기구로서 장원서의 기능에 관한 연구)

  • 전영옥;양병이
    • Journal of the Korean Institute of Landscape Architecture
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    • v.24 no.4
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    • pp.85-95
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    • 1997
  • The purpose of this study is to investigate the function of "Chang-Won-Seo" which is one of government organizations in charge of landscape architecture during Chosun-Dynasty This study is based on the analysis of historic documents published by the government offices during Chosen-dynasty. The landscape architectural administration during Chosun-Dynasty was mainly undertaken by the Ministry of Industry in both central and local government. Especially, the government office titled "Seon-Gong-Gam" under the Ministry of Industry was in charge of landscape construction. There were seven divisions under the "Chang-Won-Seo" and three divisions such as "Kwa-Won-Saek" , "Saeng-Gwa-Saek" and "Keon-Gwa-Saek" took charge of main part of the work. "Kwa-Won-Saek" was In charge of the management of public fruit gardens and lotus ponds constructed in Han-Yang(Seoul) in order to harvest fruit and edible lotus seeds. "Saeng-Gwa-Saek" was responsible for the supply of fresh fruits to the royal family and the government offices while "Keon-Gwa-Saek" took charge of supplying them with dried fruits. In view of the responsibilities of three divisions, it is concluded that the function of "Chang-Won-Seo" was not to construct and manage the pleasure gardens controlled by the government. but to manage the public fruit gardens and to supply the royal family and the government offices with fresh and dried fruits.

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Analysis of Total Aflatoxins in Spices and Dried Fruits (향신료 및 건조과실류 중 총 아플라톡신의 분석)

  • Kang, Young-Woon;Cho, Tae-Yong;Park, Hee-Ra;Oh, Keum-Soon;Kim, Dong-Sul
    • Journal of Food Hygiene and Safety
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    • v.25 no.1
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    • pp.65-72
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    • 2010
  • We used fluorescence detector to analyse total aflatoxins (G1, G2, B1, B2) with TFA (Trifluoroacetic acid) derivation method and PHRED (Photochemical reactor enhanced detection) method. PHRED method was superior in reproduction and convenience, but TFA derivation method was superior in selectivity and sensitivity. The recovery rate of aflatoxin B1, B2, G1 were more than 80%, and G2 was more than 70%. The detection limit of B1, B2, G1 and G2 were respectively 0.05, 0.05, 0.2 and $0.1\;{\mu}g/kg$. Confirmed method was used to analyse total aflatoxins in total 316 items as 9 kinds 137 dried fruits and 10 kinds 179 spices. By the result, Aflatoxins were detected in 27 dried fruits (19.7%) and in 87 spices (48.6%).

Quality Evaluation and Physical Identification of Irradiated Dried Fruits (감마선 조사 건조과일의 품질평가 및 물리적 판별)

  • Jung, Jae-Hoon;Jung, Yoonmi;Jo, Deokjo;Kwon, Joong-Ho
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.41 no.11
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    • pp.1559-1564
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    • 2012
  • Raisins (Thailand), dried mangos (Philippines), and dried figs (Iran) were gamma-irradiated (0~5 kGy), and their quality and detection characteristics were investigated. Microbiological characteristics were at safe levels when samples were irradiated at higher than 3 kGy. In color change after irradiation, dried mangoes were the most sensitive. Photostimulated luminescence (PSL) measurement was not applicable to dried fruits, showing negative or intermediate values for the irradiated samples. Thermoluminescence (TL) measurement was good for dried figs, exhibiting a glow curve in range of $150{\sim}200^{\circ}C$, where the signal intensity was dependent on the irradiation dose. Electron spin resonance (ESR) measurement was suitable for raisins and dried mangos, resulting in dose-dependent radiation-induced sugar radical signals.

Changes in the Physical Characteristics and Components of the Jujube Fruits by Drying Methods (대추의 건조방법에 따른 물성 및 성분의 변화)

  • 신승렬;이숙희;윤경영;김광수
    • Korean Journal of Food Preservation
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    • v.5 no.4
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    • pp.346-349
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    • 1998
  • This study was investigated to changes of texture, color and chemical properties in jujube fruits which dried by sun and hot air instrument. Weight and moisture contents were the lowest in jujube fruits dried by sun thin those of others. The ratio of water uptake was the highest in jujube fruits dried by hot air drying than those of others. The hardness and rate of rotting of dried jujube fruits were the highest in sun (Dying than those of others. The browning of jujube fruits dried by sun was higher than that of jujube fruits dried by other methods. Ash content was the highest in sun dried fruits than those of others, and content of vitamin C was the lowest in nm dried fruits than those of others.

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Determination of Aflatoxins in Nuts, Their Products and Dried Fruits Using Rapid Resolution Liquid Chromatography Coupled with Tandem Mass Spectrometry (RRLC-MS/MS를 이용한 견과류 및 그 가공품과 건조과실류의 아플라톡신 분석)

  • Choi, Su-Jeong;Park, Ju-Sung;Jung, So-Young;Son, Yeo-Joon;Lyi, Yun-Jeong;Kim, Mi-Sun;Park, So-Hyun;Lee, Sang-Me;Chae, Young-Zoo
    • Korean Journal of Food Science and Technology
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    • v.43 no.6
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    • pp.702-710
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    • 2011
  • The occurrence of aflatoxins $B_1$, $B_2$, $G_1$ and $G_2$ in nuts, their products and dried fruits was investigated. Samples were collected from local markets in Seoul and analyzed by rapid resolution liquid chromatography coupled with tandem mass spectrometry using an immunoaffinity column. The chromatography method was validated for assay of aflatoxins using linearity, accuracy, precision and limit of detection and quantification. The linearity in the concentration ranged from 0.10 to $20{\mu}g/kg$ with $R^2$ > 0.9999. Sample recoveries ranged from 71.1 to 97.2% with relative standard deviations below 4.5% for spiking levels from 1 to $10{\mu}g/kg$. The limits of detection ranged between 0.02 and $0.05{\mu}g/kg$ and the limits of quantification ranged between 0.05 and $0.10{\mu}g/kg$. The levels of aflatoxin $B_1$, $B_2$, $G_1$ and $G_2$ in nuts, their products and dried fruits were $B_1$ 0.10 to $9.94{\mu}g/kg$, $B_2$ 0.08 to $1.54{\mu}g/kg$, $G_1$ 0.04 to $3.21{\mu}g/kg$ and $G_2$ 0.06 to $0.14{\mu}g/kg$.

Studies on the Production of Elderberry Wine (Elderberry Wine 제조(製造)에 관(關)하여)

  • No, Hong-Kyoon;Kim, Dong-Seok;Yu, Tai-Jong
    • Korean Journal of Food Science and Technology
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    • v.12 no.4
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    • pp.242-253
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    • 1980
  • This experiment was carried out to evaluate the possibility of wine-making with Elderberry cultivated in Korea. The results obtained are summarized as follows: 1. The Elderberry fruits were composed of 82.8% moisture, 0.82% crude fat, 3.73% crude protein and 0.83% crude ash. 2. The Elderberry juices were composed of 9.2% sugar, 0.62% total acidity (as tartaric acid), pH 4. 46 and the percentage juice extraction ratio from fruits was 61.4%. 3. In fermentation experiments carried out with two strains, Saccharomyces cerevisiae ellipsoideus showed better characteristics for wine-making than Saccharomyces cerevisiae montrachet. 4. In fermentation experiments carried out with Saccharomyces cerevisiae ellipsoideus under different storage conditions, frozen fruits showed better characteristics for wine-making than dried fruits. 5. In fermentation experiments carried out with Saccharomyces cerevisiae ellipsoideus under different pressing times, red wine and pink wine showed little difference. 6. The results of organic acid contents determined by gas chromatography showed that citric acid was the main acid for frozen fruit, and lactic acid for both dried fruit and wines. 7. Sensory evaluation showed that the wine pressed at the 3rd day had the best palatability but the wine fermented with the dried fruits had the worst among the tested.

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