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The Feasibility of a Text-Delivered Intervention to Improve Dietary Habits, Stress Management Behaviors and Create Awareness of Food Assistance Resources Among College Students 文本干预改善大学生饮食习惯、压力管理行为和建立食物援助资源意识的可行性
Pub Date : 2019-11-02 DOI: 10.19080/arr.2018.04.555665
O. Brown
College students, often referred to as emerging adults, experience transitions in healthrelated behaviors as they adapt to life in college [1]. This transitional period is characterized by changes in dietary habits, stress and mealtime behaviors [2-5]. Additionally, emerging adults often lack resources and skills required for food preparation. These factors contribute to their increased risk for food insecurity [6,7]. Dietary habits that are consistent with the national dietary guidelines have been found to promote health, but college students do not meet these guidelines [8-10]. Studies have reported that college students have poor dietary habits and they do not meet their recommended daily intake of fruit and vegetable [9,11,12]. One study that examined the relationship between food insecurity and fruit and vegetable intake among college students found that food insecure students ate significantly lower daily servings of fruit and vegetable as compared to students with high food security controlling for confounding factors such as car access, race/ethnicity and gender [13]. College students also skip meals, consume high amounts of snacks and high calorie food items such as sugar sweetened beverages (SSB) [14,15]. Furthermore, National Health and Nutrition Examination Survey (NHNES) data indicate that young adults age category in which most college students fall under, have the highest mean percentage of daily calories from SSB [16].
大学生,通常被称为新兴成年人,在适应大学生活时,会经历健康相关行为的转变[1]。这一过渡期的特点是饮食习惯、压力和用餐行为的变化[2-5]。此外,新兴成年人往往缺乏准备食物所需的资源和技能。这些因素增加了粮食不安全的风险[6,7]。已经发现,符合国家饮食指南的饮食习惯可以促进健康,但大学生不符合这些指南[8-10]。研究报告称,大学生的饮食习惯很差,他们没有达到建议的每日水果和蔬菜摄入量[9,11,12]。一项研究调查了大学生的粮食不安全与水果和蔬菜摄入之间的关系,发现与控制了汽车使用、种族/民族和性别等混杂因素的高粮食安全学生相比,粮食不安全学生每天摄入的水果和蔬菜量明显较低[13]。大学生也不吃饭,吃大量零食和高热量食物,如加糖饮料[14,15]。此外,国家健康和营养调查(NHNES)的数据表明,大多数大学生所属的年轻人年龄组的SSB平均每日热量百分比最高[16]。
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引用次数: 1
Investigation of Bartonella henselae and Bartonella clarridgeiae Prevalance in Cats 猫中母鸡巴尔通体和克拉氏巴尔通体流行情况调查
Pub Date : 2019-10-23 DOI: 10.19080/arr.2018.04.555661
Ş. Kırkan
In this study, 50 blood samples taken from urban and stray cats which were examined in a private veterinary clinic in İzmir province were investigated by PCR method. PCR studies revealed that Bartonella spp. was identified from a total of % 12 of the samples. PCR identification results were 8 % for B. hensela and 4 % for B. clarridgeiae for species-based distribution. In conclusion, Bartonella species which have zoonotic importance were detected. Especially, it is confirmed the necessity of the distribution of B. henselae which transmit to human from cat fleas and importance of preventive flea medication to pet owners for feedback.
在这项研究中,采用PCR方法对伊兹密尔省一家私人兽医诊所检查的50只城市猫和流浪猫的血液样本进行了调查。PCR研究显示,共从%12份样本中鉴定出巴尔托内拉属。基于物种分布的PCR鉴定结果对亨氏双歧杆菌为8%,对clarridgiae为4%。总之,检测到了具有人畜共患重要性的巴尔onella种。特别是,确认了从猫身上传播给人类的鸡尾丝虫传播的必要性,以及向宠物主人提供预防跳蚤药物的重要性。
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引用次数: 1
"A New Approach to Assess the Physical Demands of Young Tennis Players: Inertial Movement Analysis. Preliminary Data" 一种评估青少年网球运动员体能需求的新方法:惯性运动分析。初步数据”
Pub Date : 2019-10-15 DOI: 10.19080/arr.2019.05.555660
Carlos Galé Ansodi
In recent years, there has been an increased interest around the use of wearable microsensor technology in order to improve the knowledge about activities patterns such as accelerations, decelerations, jumps and changes of direction. This complex information is a result of accelerometers, magnetometers and gyroscopes and is processed with an advanced algorithm to provide Inertial Movement Analysis (IMA). This technology may also calculate the magnitude and the direction of an agility action, classifying events within intensity and direction. Therefore, the aim of this study was to describe the physical profile of elite young tennis players focusing in the “IMA” patterns. Twenty female young high-level tennis players took part in the study (14.3 age ± 0.8 years). All tennis players were tracked at least in two matches-play (n=62) on hard court. Twelve Portable GPS devices (Minimax X S4, Catapult Innovations) operating at a sampling frequency of 10 Hz were used to collect velocity data. The GPS unit contains a tri-axial piezoelectric linear accelerometer (Kionix: KXP94) sampling at a frequency of 100 Hz. The most common axis of movement was the vertical (V_axis:39.3 ±1.9%). On the other hand, lateral displacement were the most common movements of tennis players (right:6.4±1.2 effort· min 1; left:6.3±1. effort· min 1). Furthermore, low accelerations were the most common acceleration pattern in tennis (low accelerations: 7.4±2.3 effort·min-1), whereas, the high intensity accelerations (>1.0 m·s-2) were the less frequent (high accelerations: 5.1±1.6 effort·min-1). Therefore, further literature should focus on “IMA” patterns to improve tennis players’ performance. .
近年来,人们对可穿戴微传感器技术的使用越来越感兴趣,以提高对加速、减速、跳跃和方向改变等活动模式的了解。这些复杂的信息是加速度计、磁力计和陀螺仪的结果,并通过高级算法进行处理,以提供惯性运动分析(IMA)。这项技术还可以计算敏捷动作的幅度和方向,根据强度和方向对事件进行分类。因此,本研究的目的是描述以“IMA”模式为主的优秀年轻网球运动员的身体状况。20名年轻高水平女子网球运动员参加了这项研究(14.3岁±0.8岁)。所有网球运动员至少在硬地球场上进行了两场比赛(n=62)。12台便携式GPS设备(Minimax X S4,Catapult Innovations)以10Hz的采样频率运行,用于收集速度数据。GPS单元包含一个以100Hz频率采样的三轴压电线性加速度计(Kionix:KXP94)。最常见的运动轴是垂直(V_axis:39.3±1.9%)。另一方面,网球运动员最常见的动作是侧向位移(右:6.4±1.2用力·min1;左:6.3±1)。努力·分钟1)。此外,低加速度是网球运动中最常见的加速度模式(低加速度:7.4±2.3用力·min-1),而高强度加速度(>1.0 m·s-2)则不太常见(高加速度:5.1±1.6用力·min-2)。因此,进一步的文献应该关注“IMA”模式,以提高网球运动员的表现。
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引用次数: 0
Technical Efficiency of Sole Maize and Maize/Melon Intercrop in Osun State, Nigeria 尼日利亚奥孙州玉米和玉米/甜瓜间作的技术效率
Pub Date : 2019-08-29 DOI: 10.19080/arr.2019.05.555657
Rajib Biswas
Intercropping has been found out to have enormous economic advantages for the farmer, although with some possible adjoining disadvantages attributable to competition and lack of adequate management. This study therefore analyzed and compared the technical efficiencies of sole maize and maize/melon intercrop farmers in Osun State with a view of determining the factors that influences it. Purposive sampling was used to select 47 respondents each for sole maize and maize/melon intercrop system. Stochastic frontier production function was used to estimate the technical efficiencies. The study revealed that the mean technical efficiency of maize/melon intercrop farmers was higher than that of the sole maize farmers. Costs of land, labor and implement were the factors affecting the sole maize farmers’ efficiency, while the maize/melon intercrop farmers’ efficiency was significantly determined by costs of land, labor and capital. No significant factor determines inefficiency for sole maize farmers. However, land security and extension visit were the major significant inefficiency factors found out to reduce the inefficiencies of maize/ melon intercrop farmers in the study area. It is recommended that famers in the study area should venture into the intercropping of maize and melon more than sole maize cropping; government should strengthen land security and give adequate motivation to extension agents to visit farmers more in order to increase their technical efficiencies.
人们发现,间作对农民来说具有巨大的经济优势,尽管由于竞争和缺乏适当的管理,可能会带来一些相邻的劣势。因此,本研究对奥孙州玉米单作和玉米/甜瓜间作农户的技术效率进行了分析和比较,以确定影响其技术效率的因素。采用随机前沿生产函数来估计技术效率。研究表明,玉米/甜瓜间作农户的平均技术效率高于单一玉米农户。土地成本、劳动力成本和机具成本是影响玉米单作农户效率的因素,玉米/甜瓜间作农户的效率主要由土地成本、人力成本和资金成本决定。没有任何重要因素决定单一玉米种植户的低效率。然而,土地安全和扩大访问是减少研究区玉米/甜瓜间作农民低效率的主要显著低效因素。建议研究区的农民多进行玉米和甜瓜的间作,而不是单独种植玉米;政府应该加强土地安全,并给予足够的动力让推广机构更多地拜访农民,以提高他们的技术效率。
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引用次数: 0
Correlation of Surface Plasmon Resonance Wavelength (SPR) with Size and Concentration of Noble Metal Nanoparticles 表面等离子体共振波长(SPR)与贵金属纳米颗粒尺寸和浓度的关系
Pub Date : 2019-08-29 DOI: 10.19080/arr.2019.05.555658
R. Biswas
Surface plasmon resonance SPR basically refers to collective oscillation of conduction electrons. Having the intrinsic property of sensing the surface properties, SPR have already received tremendous attention in the field of biomedical, Nano sensors, photovoltaics etc. Scientific data have also revealed that it is also highly characterized by the structure, type and dimension of the host nanoparticles, which eventually can lead us to a systematic correlation between different physical attributes of the host nanoparticles and SPR. In this work, we try to make a simplistic approach of correlating size, shape of gold (Au) and silver (Ag) nanoparticles (NPs) with their corresponding peak wavelength. It has also been attempted to bring the concentrations in the same frame. The computed results and the observed results are compared and matching up to a considerable extent has been shown in this work. It is envisioned that this small-scale correlation will help in giving a first insight towards characterization of Au and AgNPs just based only on SPR peak.
表面等离子体共振SPR基本上是指传导电子的集体振荡。SPR具有传感表面性质的固有特性,在生物医学、纳米传感器、光伏等领域已经受到了极大的关注。科学数据还表明,它还高度表征了宿主纳米颗粒的结构、类型和尺寸,这最终可以使我们在宿主纳米颗粒的不同物理属性和SPR之间建立系统的相关性。在这项工作中,我们试图用一种简单的方法将金(Au)和银(Ag)纳米颗粒的尺寸、形状与其相应的峰值波长相关联。人们还试图将浓度放在同一框架内。将计算结果与观测结果进行了比较,并在相当大的程度上显示了匹配性。可以预见,这种小规模的相关性将有助于首次深入了解仅基于SPR峰的Au和AgNP的表征。
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引用次数: 2
Cohort Study of Bovine Malignant Catarrhal Fever in Cavery Delta Districts of Tamil Nadu 泰米尔纳德邦卡弗里三角洲地区牛恶性卡他热的队列研究
Pub Date : 2019-08-29 DOI: 10.19080/arr.2019.05.555659
Krishna Kumar S
Malignant catarrhal fever (MCF) is a Sheep derived lethal viral disease mainly affecting Bovidae, cervids and other ruminant species. Alcelaphine herpesvirus 1 (AlHV-1) and ovine herpesvirus 2 (OvHV-2) are the two most widely prevalent causative organisms for tropical MCF. Wildebeest associated MCF (WA-MCF) in cattle is prevalent in African sub-continent. The OvHV-2 is prevalent in domestic sheep as a sub-clinical infection and causes sheep associated MCF (SA-MCF) in susceptible ruminants. In India, the detection of cases of SA-MCF in cattle and OvHV-2 infection in sheep during the last decade has established the presence of the virus in native sheep of the country. The present study documents the presence of bovine MCF in Cavery delta districts of Tamilnadu.
恶性卡他热(MCF)是一种羊源性致命性病毒性疾病,主要影响牛科、鹿科和其他反刍动物。Alcelaphine herpesvirus 1 (AlHV-1)和羊疱疹病毒2 (OvHV-2)是热带MCF的两种最普遍的致病生物。牛角马相关MCF (WA-MCF)在非洲次大陆流行。OvHV-2作为一种亚临床感染在家养绵羊中普遍存在,并在易感反刍动物中引起羊相关性MCF (SA-MCF)。在印度,过去十年中在牛中发现的SA-MCF病例和在羊中发现的OvHV-2感染病例已经确定了该病毒在该国本地羊中存在。本研究记录了泰米尔纳德邦卡弗里三角洲地区牛MCF的存在。
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引用次数: 0
Iteratively Reweighted Least Squares Algorithm for Nonlinear Distributed Parameter Estimation 非线性分布参数估计的迭代加权最小二乘算法
Pub Date : 2019-08-26 DOI: 10.19080/arr.2019.05.555656
F. Zama
In the treatment of distributed parameters estimation, the usual choice is that of minimizing the error norm using the least squares distance. This paper considers the problem of estimating distributed parameters representing properties of material that change over the spatial domain. In this case the parameters are represented by non-smooth functions. Moreover, the data may be affected by noise containing outliers that cannot be easily removed. In all these cases a great improvement in the solution can be obtained by solving a minimization problem in the $p$ norm where 0 p < < ∞ . When the norm $p=2$ is used, then the regularized nonlinear least squares problem can be efficiently solved by the Iterative Gauss Newton (IRGN) method as reported in [1,2] and references therein. The case 1 p < < ∞ is efficiently treated by the Iterative Reweighted Algorithm IRLS proposed in [3] for linear problems. We propose here a direct extension of such algorithm to the solution of non linear problems where 0 p < < ∞ . The non linear least squares and possibly non convex problem is substituted by a sequence of weighted least squares approximations which efficiently solve the non linear identification problem. The algorithm, named NL-LM-IRLS, is presented as an extension of the IRLS applied to the non linear minimization problem. Some preliminary results on one dimension identification problems are reported confirming the validity of this approach. In section 2 we explain the details of the iterative method and report the numerical experiments in section 3. ( ) ( ) 0 0 r F q y = − for k=0 , 1 , ..... r0 = F(q(0)) y for k = 0, 2,... D(k) = diag(|rk| + 100) qk+1 = argmin ||D(k)(F(q) y)||2 r(k+1) = F(q(k+1)) y
在处理分布参数估计时,通常的选择是使用最小二乘距离最小化误差范数。本文考虑了表示材料在空间域上变化的特性的分布参数的估计问题。在这种情况下,参数由非光滑函数表示。此外,数据可能受到包含无法轻易去除的异常值的噪声的影响。在所有这些情况下,通过求解$p$范数中的最小化问题(其中0p<<∞),可以获得解的极大改进。当使用范数$p=2$时,正则化非线性最小二乘问题可以通过[1,2]中报道的迭代高斯-牛顿(IRGN)方法和其中的参考文献有效地求解。[3]中提出的迭代加权算法IRLS有效地处理了线性问题的情况1p<<∞。我们在这里提出了这样的算法的一个直接扩展到非线性问题的解,其中0p<<∞。用一系列加权最小二乘近似代替非线性最小二乘和可能的非凸问题,有效地解决了非线性辨识问题。该算法名为NL-LM-IRLS,是应用于非线性最小化问题的IRLS的扩展。一些关于一维识别问题的初步结果证实了该方法的有效性。在第2节中,我们解释了迭代方法的细节,并在第3节中报告了数值实验。()()0 0 r F q y=−对于k=0,1。。。。。对于k=0,2,…,r0=F(q(0))y,。。。D(k)=diag(|rk|+100)qk+1=argmin||D(k
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引用次数: 0
Spatial Patterns of Co-Infection and Tuberculosis/HIV in Ceara, Brazil 巴西塞拉亚地区结核/艾滋病合并感染的空间格局
Pub Date : 2019-08-22 DOI: 10.19080/arr.2018.04.555655
D. Peres
Introduction: The tuberculosis and human immunodeficiency virus (HIV) spatial analysis, based on Morbidity and Mortality date, Contributes to the knowledge of socio-environmental risks and the identification of the most vulnerable areas. Purpose: Identify the spatial distribution tuberculosis and VERIFY Conglomerates of the existence of tuberculosis and tuberculosis/HIV coinfection cases. Methods: Ecological study with spatial analysis of tuberculosis cases. The population was composed by tuberculosis cases in Patients older than 15 years, between the years of 2005 and 2014, that lived in Ceará. The data collection was made in the SINAN and in the Mortality Information System (SIM), being informed the diagnoses and deaths Caused by tuberculosis between 2005 and 2014. Results and Discussions: The spatial analysis Showed the concentration of Municipalities with high risk for tuberculosis in the Health Regions of Sobral, Fortaleza, Caucaia, Maracanaú, Cascavel and Itapipoca. In the spatial autocorrelation two clusters of high risk for tuberculosis Were identified. The concentration of municipalities with high risks for tuberculosis/HIV coinfection are described in the Macro regions of Health and Sobral Fortress, and in the municipalities of Tauá acid, and Orós Jaguaribe, the spatial correlation two clusters identified in the mentioned macro regions. Conclusion: This study priorities defined geographic areas for the control of tuberculosis mortality and morbidity and Showed That the geographic information system technology can be used by health managers in the planning and monitoring program actions of tuberculosis.
引言:基于发病率和死亡率数据的结核病和人类免疫缺陷病毒(HIV)空间分析,有助于了解社会环境风险和确定最脆弱的地区。目的:确定结核病的空间分布,并验证结核病和结核病/HIV合并感染病例的存在。方法:采用生态学方法对肺结核病例进行空间分析。人口由2005年至2014年间居住在Ceará的15岁以上患者的结核病病例组成。数据收集是在SINAN和死亡率信息系统中进行的,了解了2005年至2014年间结核病的诊断和死亡情况。结果和讨论:空间分析显示,Sobral、Fortaleza、Caucaia、Maracanaú、Cascavel和Itapipoca卫生区结核病高危市的集中度。在空间自相关中,确定了两组结核病高危人群。卫生和Sobral堡垒宏观区域以及Tauáacid和Orós Jaguaribe市描述了结核病/艾滋病毒合并感染高风险城市的集中情况,这是上述宏观区域中确定的两个集群的空间相关性。结论:本研究确定了控制结核病死亡率和发病率的地理区域,并表明地理信息系统技术可供卫生管理人员用于结核病规划和监测项目行动。
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引用次数: 1
Some Discussions on The Establishment of a Scientific Cosmological Model 关于建立科学宇宙学模型的几点讨论
Pub Date : 2019-07-24 DOI: 10.19080/arr.2019.05.555653
Weicheng Cui
Where did we come from? Where should we go after dying? Who am I? When did the universe begin? How big is it? Will it end? Does the universe operate according to some laws or randomly? These and many other similar questions have been explored since very ancient times by many people including scientists, philosophers, religionists, and many theories have been proposed [1-3]. Today, the consensus among scientists, astronomers and cosmologists is the Big Bang Theory also known as the Big-Bang Cosmological Model (BBCM) [3,4]. The basics of the Big Bang theory are simple. In short, the Big Bang hypothesis states that all the current and past matter in the Universe came into existence at the same time, roughly 15 billion years ago. At this time, all matter was compacted into a very small ball with infinite density and intense heat called a Singularity. Suddenly, the Singularity began expanding, and the universe as we know it began [4]. This model has been confronted to a variety of observations that allow one to reconstruct its expansion history, its thermal history and the structuration of matter. Hence, what we refer to as the BBCM today is radically different from what one may have had in mind a century ago. Even the latest version of BBCM still suffers a lot of challenges [5]. Many paradoxes are related to the use of this model [6]. Burago pointed out that at least two obvious questions exist in the Big-Bang model [7]. The first question remained as to how the matter and energy were in this superdense elementary particle? It is considered incorrect to ask, what was around this particle before the explosion and whether the universe does expand? Because space and time in the universe also arose as a result of the Big Bang. It is assumed that protons, neutrons, positrons, electrons and other longlived elementary particles formed 15 billion years ago and have reached our days unchanged. The second question arose from the insolvency of ideas about the explosion of a kind of “cosmic egg”, which was the explosion of the largest nuclear bomb. This point of view boils down to the assertion that “space” exploded, and not a material object. At the same time, the authors of this idea do not bother explaining what they think is a “space” and what can explode in an empty space? Therefore, many people are still working on the improvement of the Big-Bang model or the construction of other totally new cosmological models [3].
我们从何而来?我们死后应该去哪里?我是谁?宇宙是什么时候开始的?它有多大?它会结束吗?宇宙是按照某种规律运行还是随机运行?自古以来,包括科学家、哲学家、宗教学家在内的许多人都在探索这些问题和许多其他类似的问题,并提出了许多理论[1-3]。今天,科学家、天文学家和宇宙学家的共识是大爆炸理论,也被称为大爆炸宇宙学模型(BBCM)[3,4]。宇宙大爆炸理论的基础很简单。简而言之,大爆炸假说认为,宇宙中所有现在和过去的物质都是在大约150亿年前同时出现的。在这个时候,所有的物质都被压缩成一个非常小的球,具有无限的密度和强烈的热量,称为奇点。突然,奇点开始膨胀,我们所知的宇宙开始膨胀。这个模型面临着各种各样的观测,这些观测允许人们重建它的膨胀历史、热历史和物质结构。因此,我们今天所说的BBCM与一个世纪前人们可能想到的完全不同。即使是最新版本的BBCM仍然面临很多挑战。许多矛盾都与这个模型的使用有关。Burago指出,在大爆炸模型中至少存在两个明显的问题。第一个问题仍然是物质和能量在这个超密集的基本粒子中是如何存在的?人们认为这样的问题是不正确的,爆炸前这个粒子周围是什么,宇宙是否会膨胀?因为宇宙中的空间和时间也是大爆炸的结果。据推测,质子、中子、正电子、电子和其他寿命较长的基本粒子形成于150亿年前,直到今天都没有改变。第二个问题产生于关于一种“宇宙蛋”爆炸的理论的破产,这种爆炸是最大的核弹的爆炸。这种观点可以归结为“空间”爆炸的断言,而不是一个物质物体。与此同时,这个观点的作者并没有费心解释他们认为什么是“空间”,什么会在一个空荡荡的空间里爆炸?因此,许多人仍在致力于改进大爆炸模型或构建其他全新的宇宙学模型。
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引用次数: 3
Important Mycotoxins, Iran Status 重要真菌毒素,伊朗
Pub Date : 2019-07-10 DOI: 10.19080/ARR.2019.05.555651
R. K. Osboo
A review of reports on mycotoxins demonstrates that aflatoxins, fumonisins, and deoxynivalenol are the most important while zearalenone and ochratoxin also were found frequently in Iran. Natural mycotoxin contaminations of the most important plant grains and commodities have been reported during the recent decade. In 2013 more than 90% of wheat samples collected at harvest time in Ardabil province was contaminated to deoxynivalenol, with the average amount of 1.7μgg -1 . Wheat, barley, maize, and rice were tested for zearalenone contamination but generally, contaminations were below than 200μgkg -1 . Fumonisin contamination was reported in many research and maize is one of the most contaminated cereals to fumonisin, in some maize samples 10μgg -1 of this carcinogenic compound was detected. Aflatoxins, the most thoroughly studied and the best understood of mycotoxins have occurred in foodstuffs commonly all over the world. Tree nuts, particularly pistachio nuts, are highly susceptible to contamination by aflatoxins, 32% of the 122 isolates of A. flavus isolates from pistachios, produce more than 2μgkg -1 aflatoxins, also aflatoxin contamination also was detected in fig, almond, and hazelnut. Cereals could also be contaminated to aflatoxins and sometimes 100% of samples were contaminated to aflatoxins. AFB1 was detected in 43.6% of maize samples, in which only 22.5% were contaminated to higher than MRL level. Barley, grape, raisin, and coffee are the major commodity that could contaminate to ochratoxin A; heavy contamination of raisin was reported in damaged raisin sample in Iran. There are a few works on herbal medicine contamination to mycotoxin and natural occurrence of AFs in herbal medicines was less than tolerance level. Contaminations of the most important mycotoxins in food have been reviewed in this article.
对真菌毒素报告的回顾表明,黄曲霉毒素、伏马毒素和脱氧雪腐镰刀菌醇是最重要的,而玉米赤霉烯酮和赭曲霉毒素也经常在伊朗被发现。在最近十年中,许多重要的植物谷物和商品受到天然霉菌毒素污染的报道。2013年,在阿达比尔省收获季节采集的小麦样品中,90%以上的样品被脱氧雪腐镰梨醇污染,平均污染量为1.7μgg -1。对小麦、大麦、玉米和水稻进行了玉米赤霉烯酮污染检测,但污染程度普遍低于200μgkg -1。许多研究报道了伏马菌素污染,玉米是受伏马菌素污染最严重的谷物之一,在一些玉米样品中检测到这种致癌化合物10μgg -1。黄曲霉毒素是研究最彻底和了解最多的真菌毒素,在世界各地的食品中普遍存在。树坚果,特别是开心果,对黄曲霉毒素的污染非常敏感,从开心果分离的122株黄曲霉菌株中,32%产生的黄曲霉毒素超过2μgkg -1,在无花果、杏仁和榛子中也检测到黄曲霉毒素污染。谷物也可能被黄曲霉毒素污染有时100%的样品被黄曲霉毒素污染。43.6%的玉米样品检出AFB1,其中只有22.5%的玉米样品高于MRL水平。大麦、葡萄、葡萄干和咖啡是可能污染赭曲霉毒素A的主要商品;据报道,在伊朗受损的葡萄干样品中发现了严重的葡萄干污染。有关中草药真菌毒素污染的研究较少,中草药中真菌毒素的自然发生量低于耐受水平。本文综述了食品中最重要的真菌毒素污染。
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引用次数: 5
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