FacebookInstagramTwitterContact

 

Hidden Epidemic: Oral Infections And How To Prevent Them           >>           NYC Wants All Uber And Lyft Cars To Be Electric By 2030           >>           Experts Warn AI Could One Day 'Kill Everyone' And Human Race Would Be Like 'The Dodo'           >>           'I Have No Friends At My Work - So I'm Forced To Eat My Lunch Alone In The Toilet'           >>           Gerard Butler Says He Almost Killed Co-Star Hilary Swank While Filming P.S. I Love You           >>           Kourtney Kardashian's Naked Dress Is Her Most Unconventional Look Yet           >>           Pete Davidson And Chase Sui Wonders Continue To Heat Up Hawaii With PDA Outing           >>           Adani Group: Asia's Richest Man Hits Back At 'Con' Allegations           >>           US Economic Growth Stronger Than Expected           >>           Hemp Makes A Comeback In The Construction Industry           >>          

 

SHARE THIS ARTICLE




REACH US


GENERAL INQUIRY

[email protected]

 

ADVERTISING

[email protected]

 

PRESS RELEASE

[email protected]

 

HOTLINE

+673 222-0178 [Office Hour]

+673 223-6740 [Fax]

 



Upcoming Events





Prayer Times


The prayer times for Brunei-Muara and Temburong districts. For Tutong add 1 minute and for Belait add 3 minutes.


Imsak

: 05:05 AM

Subuh

: 05:15 AM

Syuruk

: 06:36 AM

Doha

: 06:59 AM

Zohor

: 12:34 PM

Asar

: 03:55 PM

Maghrib

: 06:30 PM

Isyak

: 07:42 PM

 



The Business Directory


 

 



Lifestyle


  Home > Lifestyle


Researchers Take A Closer Look At The Migration Of Heavy Metals From Soil To Rice In China


 


 September 23rd, 2020  |  12:23 PM  |   613 views

NATURALNEWS

 

Soil and water contaminants like pesticides and heavy metals build up in living organisms. Known as bioaccumulation, this usually affects aquatic animals and plants used for food. The bioaccumulation of heavy metals in crops is a hot topic among scientists because of the threat they pose to human health. Besides having toxic effects, some metals are also linked to serious diseases, such as Alzheimer’s disease, diabetes and various types of cancer.

 

Heavy metals also cause environmental problems. Their presence in soil, for instance, prevents the biodegradation of organic contaminants, which are toxic to soil organisms, plants and animals. Heavy metal contamination also reduces soil usability and fertility, as well as the biodiversity of microorganisms. Scientists say that this can disturb the ecological balance.

 

Soil contamination with heavy metals is caused by a number of things. These include the rapid expansion of industrial areas, the use of chemical fertilizers, wastewater irrigation, an increase in petrochemical spillage, atmospheric deposition and the haphazard disposal of industrial wastes. The most commonly found toxic metals in crops are arsenic, cadmium, chromium, copper, lead, mercury, nickel and zinc.

 

In a recent study, Chinese researchers investigated the bioaccumulation and transfer of heavy metals from soil to plants. They also looked at the effects of soil properties on these events. The researchers reported their findings in an article published in the journal Acta Agriculturae Scandinavica, Section B – Soil & Plant Science.

 

 

Soil properties influence the bioaccumulation of heavy metals in plants

 

According to a previous study, certain plants, like leafy and non-leafy vegetables, are good accumulators of heavy metals. This poses a problem to humans not just because of the health risks involved in consuming these crops, but also because heavy metals reduce the nutritional value of these foods.

 

For their study, the researchers conducted their experiments on a regional scale. They collected a total of 30 sets of soil and matching rice tissue samples (root, straw and grain) from Xiangzhou, a county located in Guangxi, China.

 

The researchers analyzed the soil samples to determine their properties, and the different rice tissue samples to determine their cadmium, copper, lead and zinc content. They then assessed the mobility and bioaccumulation of these heavy metals by calculating transfer coefficients and bioaccumulation factors.

 

The researchers found that the levels of cadmium and lead in the soil samples were 50 percent and 3.33 percent higher than the maximum concentrations permitted in China. Cadmium and lead levels in rice grain also exceeded permitted levels by 30 percent and 6.67 percent, respectively.

 

In addition, the researchers found that cadmium and zinc had better mobility and bioaccumulation capabilities than copper and lead. Among the heavy metals analyzed, lead had the weakest mobility.

 

The researchers said that the bioaccumulation and mobility of heavy metals can be reduced by controlling soil pH, as well as the amount of calcium oxide, organic carbon, iron oxides and manganese in soil.

 

 

Avoiding high levels of heavy metals in produce

 

Plant-based foods like fruits, vegetables and whole grains are the main components of a healthy diet. However, not every food that is considered nutritious is clean. Some produce has been found to contain high levels of heavy metals, particularly cadmium. When consumed over a long period of time, cadmium can weaken bones and cause heart, kidney and liver damage. To avoid foods with high levels of this toxic metal, researchers recommend eating organically grown produce.

 

In a study published in the British Journal of Nutrition, a team of American and European researchers found that conventionally grown crops have significantly higher concentrations of cadmium and pesticide residues than organic crops. Meanwhile, the latter contains 60 percent more key antioxidants than their counterparts, suggesting that organic produce is cleaner and more nutritious than conventional crops.

 

The researchers said that eating organically grown produce provides additional antioxidants equivalent to eating between one to two extra portions of fruits and vegetables a day. Many of the antioxidants they found in organic foods have been linked to a reduced risk of chronic diseases. The researchers attributed the higher antioxidant concentrations and lower cadmium levels in organic produce to specific agronomic practices — like the non-use of mineral fertilizers — in organic farming systems.

 


 

Source:
courtesy of NATURALNEWS

by Evangelyn Rodriguez

 

If you have any stories or news that you would like to share with the global online community, please feel free to share it with us by contacting us directly at [email protected]

 

Related News


China To Resume Direct Flights To Sabah Next Month

 2023-01-27 10:44:54

Cost Of Living: How Onions Became A Luxury In The Philippines

 2023-01-27 10:47:10

Adani Group: Asia's Richest Man Hits Back At 'Con' Allegations

 2023-01-27 11:26:56