哈尔滨市售蔬菜水果有机磷农药残留检测分析

目的为了解黑龙江省哈尔滨市售蔬菜水果有机磷农药残留情况,随机抽检330份样品,其中蔬菜200份,水果130份。方法全部样品按照GB/T5009.20-2003的方法进行7种有机磷农药的残留检测。结果蔬菜中共检测出甲胺磷、敌敌畏、氧化乐果和水胺硫磷4种有机磷农药,特别是国家禁用于蔬菜上的氧化乐果在20种蔬菜中均有检出,检出率为12.0%;本次蔬菜检测不合格率为17.0%,其中叶菜类、根茎类、瓜果菜类的不合格率分别占11.0%,0.5%,5.5%。水果中检测出甲胺磷、敌敌畏和氧化乐果3种有机磷农药,不合格率为3.08%。结论哈尔滨市蔬菜水果有机磷农药存在一定污染问题,应加强农药残留的监测。     

泉州市蔬菜水果中6种元素含量分析

用火焰原子吸收分光光度法对泉州市的２５种蔬菜，９种水果进行锌、铜、锰、铁、钙、镁６种元素含量测定。测定回收率为９１．２％～１０１．６％。结果，蔬菜中的锌、钙、铁含量显著高于水果。所测的蔬菜、水果，为菠菜中的铁、铜、锌含量最高，其余的镁、锰、钙３种元素含量最高的分别为香蕉、芋头、小白菜     

包头市出产蔬菜水果稀土元素含量检测及健康风险评价

目的 本研究通过测定包头市出产蔬菜水果中稀土元素的含量,进行居民摄入健康风险评价。方法 应用湿法消解-电感耦合等离子体质谱仪（ICP - MS）,测定蔬菜水果中17种稀土元素含量,比较各类蔬菜水果的均值,对稀土元素进行相关性分析,并使用ADI方法对蔬菜水果中稀土元素可能对人体产生的健康风险进行安全评价。结果 2019年包头市出产蔬菜水果中稀土元素含量范围为0.00～2.03 mg/kg,平均含量0.39 mg/kg。叶菜类的稀土元素平均含量最高,其次是水果,最低是根菜类,Ce、Sm和Nd 3种稀土元素之间均具有较强相关性,包头市居民食用蔬菜水果摄入稀土元素日平均摄入量为0.0035 mg/(kg·d),远低于安全剂量标准。结论 2019年包头市出产蔬菜水果中稀土元素含量较低,包头市居民通过食用本地出产蔬菜水果摄入稀土元素量是安全的。     

原子吸收法测定31种蔬菜水果中的微量元素含量

目的了解西安市市售常见蔬菜水果中微量元素含量,为指导人们的健康饮食提供参考数据。方珐采用原子吸收光谱法测定26种蔬菜和5种水果中的钙、镁、锌、铁、锰、铜、铅等元素含量。结果样品中钙含量前三位的蔬菜为白蒿、芹菜、青菜,钙含量最高的水果为橙子;镁含量前三位的蔬菜为白蒿、红薯、菠菜,镁含量最高的水果为香蕉;铁含量最高的蔬菜、水果分别为白蒿、菠萝;锌含量最高的蔬菜和水果分别为莴笋和苹果;铜元素含量最高的蔬菜和水果分别为红薯和苹果;锰含量最高的蔬菜和水果分别为生姜和菠萝;铅含量前三位的蔬菜是平菇、莲花白和莴笋。钙、镁、铁、锌、铜、锰含量的变化范围分别为18．64～2728．35mg／kg、46．03～572．28mg／kg、1．45～141．46mg／kg、8．25～83．67mg／kg、0．01～4．659mg／kg、0．124～43．383mg／kg、0．148～8．384mg／kg。结论不同蔬菜、水果中微量元素含量差别较大,人们应该合理膳食、平衡营养。     

淮安市2016—2020年市售蔬菜水果中农药残留监测与风险评估

目的 分析淮安市售蔬菜水果中农药残留情况,评估当地消费者蔬菜水果农药暴露风险。方法 根据《食品安全风险监测工作手册》的要求,在淮安市所辖8个县(区)农贸市场、商超、网店随机购买市售蔬菜水果,监测样品中农药残留,依据GB2763—2016《食品安全国家标准食品中农药最大残留现状》进行判定,采用危害物风险系数法评估农药残留风险。结果 2016—2020年共采集蔬菜水果样品283份,农药残留检出率54.42%,超标率3.89%;其中蔬菜样132份,农药残留检出率为59.09%,超标率为7.58%;水果样151份,农药残留检出率为50.33%,超标率为0.66%;蔬果间农药残留检出率差异无统计学意义(χ²=2.18,P>0.05),超标率差异有统计学意义(χ²=9.01,P<0.01)。蔬菜中杀菌剂和杀虫剂检出率分别为10.23%、2.22%,差异有统计学意义(χ²=73.57,P<0.01);水果中杀菌剂检出率为14.65%,无杀虫剂检出。危害物风险系数评估显示,淮安市售蔬菜水果超标农药的风险系数均>1...     

部分蔬菜水果乳制品中铅含量调查

蔬菜水果及乳制品是人们生活的必需品。随着人民生活水平的提高，健康意识的增强，这些食品的安全性问题日益受到人们的重视。食品中的污染物是影响食品安全的主要因素之一。随着食品工业新原料的广泛使用、环境污染程度的加剧，食品中的污染物对食品安全的危害也越来越大。根据卫生部《关于建立和完善全国食品污染物监测网的通知》(卫法     

2012年绵阳市蔬菜水果粮食中有机磷农药残留检测结果分析

目的了解2012年绵阳市蔬菜、水果和粮食中16种有机磷农药残留量,为食用农产品的监管提供科学依据。方法从绵阳市各类超市、农贸市场和农户随机购买样品,采用NY/T761-2008气相色谱法进行分析,根据GB2763-2012《食品中农药最大残留限量》判定。结果 138份蔬菜、水果和粮食样品中16种有机磷农药残留全部合格样品116份,总合格率为84.1%。有机磷农药残留量检出率分别为粮食11.1%,蔬菜57.8%和水果33.3%,差异有统计学意义（P〈0.05）。有机磷农药残留超标率分别为蔬菜16.7%、水果16.7%和粮食11.1%,其中茎叶花菜类35.0%。不同季节样品有机磷农药残留检出率和超标率差异有统计学意义（P〈0.05）。超市、农贸市场和农户3种不同来源样品有机磷农药残留量超标率差异无统计学意义（P〉0.05）。结论 2012年绵阳市蔬菜、水果和粮食中有机磷农药残留均有检出,茎叶花菜类蔬菜中农药残留情况较为严重。     

蔬菜水果的抗氧化活性与总黄酮含量的相关性

[目的]研究蔬菜、水果的抗氧化活性与总黄酮的相关性。[方法]采用Ferric Reducing Antioxidant Powerassay,FRAP法和分光光度法测定了51种蔬菜和30种水果的抗氧化活性、总黄酮含量,分析它们之间的相关性。[结果]蔬菜的抗氧化活性与总黄酮之间的相关系数为0.398,水果的抗氧化活性与总黄酮之间的相关系数为0.710。[结论]蔬菜、水果的抗氧化活性与总黄酮含量具有一定的相关性,但不同种类的蔬菜和水果,相关性有一定的差异。     

蔬菜水果与癌症的防治

癌症是目前严重威胁人类健康和生命的"三大杀手"之一,在早期往往不易被发现,到了中晚期时,治疗起来又甚棘手.因此,癌症的防治工作显得尤为重要.饮食就象一把双刃剑,不健康的饮食会致病,科学的饮食可以防病.在此,就饮食中的水果蔬菜与防癌作一综述.     

The Mineral Content of Mexican Fruits and Vegetables

As part of the development of new food composition tables for Mexico, a number of fruit and vegetable samples, grown in Mexico, were purchased fresh from the main market in Mexico City. After washing and drying to remove contaminants, the samples were freeze dried and analyzed for the major elements (Na, K, Ca, P, Mg, Fe) by flame photometric and spectrophotometric procedures and for the minor and trace elements (Cu, Zn, Mn, Co, Cr, Cd, Pb) by atomic absorption spectrophotometry. The results are compared with those from the United Kingdom and German food composition tables. In general there were no consistent differences between the European and Mexican data, though the P content of Mexican fruits tended to be lower. There were noticeably higher Pb levels in Mexican fruits than those of United Kingdom origin, while root and green vegetables showed similar Pb levels.     

气相色谱-质谱联用仪测定果蔬中常用农药残留

目的:分析研究气相色谱-质谱联用仪在果蔬常用农药残留检测中的应用成效。方法:应用岛津GCMS-TQ8040气相质谱联用仪对果蔬样品中的氟乐灵、乙草胺、异丙甲草胺、二甲戊灵、反式氯丹等10种农药残留进行检测分析。结果:果蔬样品中10种除草剂、杀菌剂、杀虫剂等农药残留平均回收率为78.81%~117.96%。结论:应用气相色谱-质谱联用仪可以对果蔬中常用农药残留进行检测,方便会计,准确度高,具有较好的应用效果。     

陕西省部分野生及传统果菜的氨基酸分析

<正> 陕西省地跨温带与亚热带半干旱半湿润地区,植物种类繁多,分布面积广,自然资源丰富,有些野生植物如沙棘、刺梨等已被人们开发利用,并对其中所含营养素进行过分析,但仍有许多具有资源优势的野生果菜未进行过氨基酸分析方面的研究。我们利用Beckman 121MB型氨基酸分析仪,对沙棘(Hippophae rhamnoides L.)、猕猴桃(Actinidia arguta     

2,6-二氯靛酚反滴定法测定红色果蔬中还原型VC

<正>天然VC有还原型和脱氢型两种,新鲜水果蔬菜以还原型为主。还原型VC测定方法主要有:2,6-二氯靛酚滴定法,碘量法,分光光度法,高效液相色谱法和极谱法等[1],其中2,6-二氯靛酚(DCIP)滴定法利用还原型VC能将染料DCIP还原为无色的原理,有经济、准确、快速、简便的特点,常用于果蔬中还原型VC含量测定。但该方     

Wild Leafy Vegetables Consumed in Buhera District of Zimbabwe and Their Phenolic Compounds Content

A questionnaire was used to gather information on the wild leafy vegetables consumed. The phenolic concentrations were determined by the vanillin, butanol, and tannin binding assays. Seventy-nine traditional vegetables were mentioned by the respondents and 20 of these were classified according to their species. The contents of flavonoids varied from 1.2 mg/g for Cleome gynandra to 8.0 mg/g for Bidens pilosa. The levels of proanthocyanidins ranged from 1.9 mg/g for lettuce to 11.2 mg/g for Bidens pilosa. The tannin contents of the vegetables ranged from 5.7 mg/g for Cleome gynandra to 8.3 mg/g for Bidens pilosa. The present study showed that these vegetables are valuable sources of phenolic compounds as compared to some exotic species.     

The Role of Self-Identity in Predicting College Students’ Intention to Consume Fruits and Vegetables

Objective

To identify factors influencing intention to consume fruits and vegetables (F&V) among college students by applying the Theory of Planned Behavior with the inclusion of self-identity and past behavior.

常见果蔬汁液对氧自由基的清除作用

研究发现 ,新鲜水果蔬菜含有人体所需的多种营养素 ,还含有与抗氧化防衰老有关的黄酮、花色素及抗氧化酶类[1] ,有人对部分水果的抗氧化作用和清除自由基作用进行了研究[2 ,3] 。但对同种水果的不同可食部位 ,或不同品种的同一果蔬对活性氧自由基的清除能力的研究尚少。本实验采用比色法测定了常见果蔬的原汁、同种果蔬的不同可食部位汁液对活性氧自由基的清除作用 ,为有效利用果蔬提供依据。1　材　料　与　方　法1 .1　仪器与试剂　　国产 72 1分光光度计 :上海第三分析仪器厂 ;自制光反应箱 :内装灯管 ,四周衬上铝箔 ;抗坏血酸 :上海生工…     

Fisetin,a Potent Anticancer Flavonol Exhibiting Cytotoxic Activity against Neoplastic Malignant Cells and Cancerous Conditions: A Scoping,Comprehensive Review

Diet plays a crucial role in homeostasis maintenance. Plants and spices containing flavonoids have been widely used in traditional medicine for thousands of years. Flavonols present in our diet may prevent cancer initiation, promotion and progression by modulating important enzymes and receptors in signal transduction pathways related to proliferation, differentiation, apoptosis, inflammation, angiogenesis, metastasis and reversal of multidrug resistance. The anticancer activity of fisetin has been widely documented in numerous in vitro and in vivo studies. This review summarizes the worldwide, evidence-based research on the activity of fisetin toward various types of cancerous conditions, while describing the chemopreventive and therapeutic effects, molecular targets and mechanisms that contribute to the observed anticancer activity of fisetin. In addition, this review synthesized the results from preclinical studies on the use of fisetin as an anticancer agent. Based on the available literature, it might be suggested that fisetin has a bioactive potential to become a complementary drug in the prevention and treatment of cancerous conditions. However, more in-depth research is required to validate current data, so that this compound or its derivatives can enter the clinical trial phase.     

1024份果蔬农药残留状况监测

目的掌握蔬菜水果中农药残留水平,为安全食用提供科学依据。方法定期采样共计1 024份,按本实验室的方法检测有机磷、有机氯和拟除虫菊酯类农药残留水平,依据GB2763-2005进行评价。结果有机磷类农药检出率为30.76%,超标2.86%;有机氯类农药检出率为15.23%,无超标;拟除虫菊酯类农药检出率为40.23%,超标1.94%。结论各种农药在蔬菜中使用非常普遍,应采取综合措施,严把农药采购关,选择低毒种类农药,从根本上做到＂从土壤到餐桌＂的安全。     

Food Insecurity Was Associated with Lower Fruits and Vegetables Consumption but Not with Overweight and Obesity in Children from Mexican Fishing Communities

ABSTRACT

Food insecurity has been associated with decreased household food supplies, which could affect children’s fruit and vegetables intakes and increases their risk of being overweight or obese. The aim of this study was to determine if food insecurity was associated with lower fruit and vegetables consumption and overweight and obesity in children from Mexican fishing communities. A cross-sectional study was 4conducted with 100 elementary-school children aged 6–12 years. A survey that evaluated socioeconomic conditions, food insecurity, and fruits and vegetables consumption was applied. Weight and height were measured. The association between key variables and food insecurity was assessed using linear regression. Sixty-four percent of households experienced food insecurity. Food-insecure children reported lower consumption of fruits and fruits plus vegetables than did their peers with food security (P trend = 0.040 and 0.038, respectively). Food insecurity was also associated with lower chance to meet the recommendation of fruit and vegetable consumption (P trend in logit < 0.001), but was negatively associated with the prevalence of overweight and obesity (P trend in logit < 0.001). Food-insecure children had lower fruits and vegetables consumption but were no more likely to be overweight or obese than their food-secure counterparts.