Growing patterns to produce 'nitrate-free' lettuce (Lactuca sativa)

被引:8
作者
Croitoru, Mircea Dumitru [1 ]
Muntean, Daniela-Lucia [2 ]
Fueloep, Ibolya [1 ]
Modroiu, Adriana [1 ]
机构
[1] Univ Med & Pharm Tirgu Mures, Dept Toxicol Biopharmaceut & Pharmacokinet, Targu Mures, Romania
[2] Univ Med & Pharm Tirgu Mures, Dept Analyt Chem & Anal Med, Targu Mures, Romania
来源
FOOD ADDITIVES AND CONTAMINANTS PART A-CHEMISTRY ANALYSIS CONTROL EXPOSURE & RISK ASSESSMENT | 2015年 / 32卷 / 01期
关键词
HPLC; lettuce; nitrite; nitrate; hydroponics; VEGETABLES; RISK; NITRITES; SPINACH; ACCUMULATION; CANCER;
D O I
10.1080/19440049.2014.979887
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
Vegetables can contain significant amounts of nitrate and, therefore, may pose health hazards to consumers by exceeding the accepted daily intake for nitrate. Different hydroponic growing patterns were examined in this work in order to obtain 'nitrate-free lettuces'. Growing lettuces on low nitrate content nutrient solution resulted in a significant decrease in lettuces' nitrate concentrations (1741 versus 39mgkg(-1)), however the beneficial effect was cancelled out by an increase in the ambient temperature. Nitrate replacement with ammonium was associated with an important decrease of the lettuces' nitrate concentration (from 1896 to 14mgkg(-1)) and survival rate. An economically feasible method to reduce nitrate concentrations was the removal of all inorganic nitrogen from the nutrient solution before the exponential growth phase. This method led to lettuces almost devoid of nitrate (10mgkg(-1)). The dried mass and calcinated mass of lettuces, used as markers of lettuces' quality, were not influenced by this treatment, but a small reduction (18%, p<0.05) in the fresh mass was recorded. The concentrations of nitrite in the lettuces and their modifications are also discussed in the paper. It is possible to obtain 'nitrate-free' lettuces in an economically feasible way.
引用
收藏
页码:80 / 86
页数:7
相关论文
共 25 条
[1]   Nitrate accumulation in plants, factors affecting the process, and human health implications. A review [J].
Anjana ;
Umar, Shahid ;
Iqbal, Muhammad .
AGRONOMY FOR SUSTAINABLE DEVELOPMENT, 2007, 27 (01) :45-57
[2]  
[Anonymous], 2004, Official J Eur Commun, VL104, P48
[3]   NITRATE ACCUMULATION IN TABLE BEETS AND SPINACH AS AFFECTED BY NITROGEN, PHOSPHORUS, AND POTASSIUM NUTRITION AND LIGHT-INTENSITY [J].
CANTLIFFE, DJ .
AGRONOMY JOURNAL, 1973, 65 (04) :563-565
[4]   Nitrate accumulation in plants:: a role for water [J].
Cárdenas-Navarro, R ;
Adamowicz, S ;
Robin, P .
JOURNAL OF EXPERIMENTAL BOTANY, 1999, 50 (334) :613-624
[5]   Ascorbic acid, nitrate, and nitrite concentration relationship to the 24 hour light/dark cycle for spinach grown in different conditions [J].
Chang, Audrey Chingzu ;
Yang, Tsz Yi ;
Riskowski, Gerald L. .
FOOD CHEMISTRY, 2013, 138 (01) :382-388
[6]   Nitrite and nitrate can be accurately measured in samples of vegetal and animal origin using an HPLC-UV/VIS technique [J].
Croitoru, Mircea Dumitru .
JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES, 2012, 911 :154-161
[7]   CONGENITAL-MALFORMATIONS AND MATERNAL DRINKING-WATER SUPPLY IN RURAL SOUTH-AUSTRALIA - A CASE-CONTROL STUDY [J].
DORSCH, MM ;
SCRAGG, RKR ;
MCMICHAEL, AJ ;
BAGHURST, PA ;
DYER, KF .
AMERICAN JOURNAL OF EPIDEMIOLOGY, 1984, 119 (04) :473-486
[8]   Monitoring of nitrites and nitrates levels in leafy vegetables (spinach and lettuce): a contribution to risk assessment [J].
Iammarino, Marco ;
Di Taranto, Aurelia ;
Cristino, Marianna .
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE, 2014, 94 (04) :773-778
[9]   Endogenous levels of nitrites and nitrates in wide consumption foodstuffs: Results of five years of official controls and monitoring [J].
Iammarino, Marco ;
Di Taranto, Aurelia ;
Cristino, Marianna .
FOOD CHEMISTRY, 2013, 140 (04) :763-771
[10]   Nitrosamine and related food intake and gastric and oesophageal cancer risk:: A systematic review of the epidemiological evidence [J].
Jakszyn, Paula ;
Gonzalez, Carlos Alberto .
WORLD JOURNAL OF GASTROENTEROLOGY, 2006, 12 (27) :4296-4303