Ways to Test Pesticides in Vegetables

Noadays many people concerned about their food supply as more unsafer case of food exposure to us. Expercially for pesticides in vegetables.Due to the Chemical growing of the plants, most of the fruits and vegetables are contain higher pesticides and nitrate than as usually. Thus cause a serious problem on our body healthy.


Many studies on whether pesticedes can be found in their vegtables and organic foods can be found in many countries. And many countries strives to keep the food supply safe by setting limits on pesticide use on foods. The Food and Drug Administration and United Stateds Department of Agriculture work together to establish safe limits of crop exposure to pesticides. And here we will share some methods of testing vegetables for pesticides. However, you can minimize your exposure to pesticides in vegetables by choosing and preparing foods carefully.


Methods to Test Pesticides

1. Testing Laboratories

Independent testing laboratories offer testing for pesticide residues in plant tissues. Plant material must be handled carefully and frozen as quickly as possible to prevent chemicals from being metabolized. They must then be shipped on ice to a lab. This kind of testing is only useful for vegetables that can be destroyed. It is also cost prohibitive, as testing starts around $100 per sample for a single contaminant. Many labs test only for suspected chemicals rather than generating a list of chemicals found in the plant materials. Laboratory testing is not a practical option for anyone except the commercial farmer.


2. Limiting Exposure

If you are concerned about pesticides on the vegetables you consume, you can take many precautions to limit your exposure risk. Organic produce is grown without the use of pesticides, theoretically creating pesticide-free vegetables. Chemicals used on long-tended agricultural plots can persist in the soil, but overall pesticide residues of organic produce are extremely low or non-existent. Eating a variety of vegetables also helps to reduce your exposure to pesticides. Vegetable variety literally spreads out your risk by introducing vegetables from different farms and plots that have received a variety of treatments.

3. Portable Pesticides Test Kit

laboratory testing vegetables for pesticides require cost-prohibitive and sophisticated laboratory equipment, however, you can use Greentest nitrate tester, there are many portable tools allow you to test pesticides for your food on the market. Greentest nitrate tester is work by testing the nitrate level of your food by inserting the prope to the foods you want to test and it will shows you the results in 3 seconds whether they are safe or unsafe. Actually, vegetables contain pesticides its nitrate level is higher than others. So by testing the nitrate level can know whether the food has pesticides on it.


Bedides test pesticides, you can choose which kinds of vegetables and fruits to eat, some vegetables are contain higher nitrate and pesticides. Carefully preparing vegetables that may contain residual chemicals and remove the pesticides for your vegetables by runing water, but do not use soap. Peel vegetables to remove any surface contaminants that may remain. Discard the outer leaves from cabbage and lettuce. Cooking can also break down residual pesticides that may have absorbed into the vegetable in trace amounts.

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How to Freeze Fresh Vegetables

In many cases we need to freeze our vegetables to  preserve the nutrition and can reduce the nitrate level.With the price of fresh produce soaring and continued studies on the dangers of pesticides, growth formula and food-borne illnesses, And we may buy many kinds of vegetables from our trusted store at one time, But if we do not preserve the buying vegetables, it will reduce many harmful substances such as high level of nitrate, so you’ll know how to freeze your fresh garden vegetables to keep in their nutrients and protect your healthy eatting.

Here is the video guides on How to Freeze Fresh Vegetables from ehow.

Guides on freezing vegetables

1. Wash and sort the vegetables. Remove stems and any bruised or off-color parts.

2. Cut or chop the vegetables into usable pieces. For example, slice carrots ¼ inch thick and cut cauliflower into 1 inch cubes.

3. Boil one gallon of water per pound of vegetables you plan to blanch at a time. Fill the cooling pans with ice cubes and cold water.

How to Freeze Fresh Vegetables
4. Lower the colander or net bag into the boiling water. The blanching time for each type of vegetable begins once the water has returned to a boil. Cover the pot and boil the vegetables until the timer rings.

5. Remove the colander from the pot using potholders and carefully place the vegetables into the ice water. Refill the colander with another batch of vegetables to blanch and cool. Change the boiling water if it becomes cloudy.

6. Place cooled vegetables back in the colander and allow them to drain thoroughly. Any excess water will form ice crystals.
7. Pack the vegetables into a freezing container and close the lid tightly. Label the container with the contents and the date. Freeze the container.

To check your vegetables is safe or not, you can use our Greentest nitrate tester, especially you are making food for your baby.



Why We Need to Test Nitrate in Vegetables

We all know that we should eat enough vegetables everyday or we may miss out on the vital nutrients that keep us healthy. Adding more vegetables into our diet can make us more healthier. However, some vegetables contain high levels of nitrate due to the miss growing or by large used of fertilizers , you can see more about 4 Tips to Avoid Nitrate in Vegetable and Fruit.

And high level of nitrate intake actually lead to nitrate poisoning. This doesn’t mean that you should stop eating your vegetables, but it does mean that you need to be cautious about what you eat and control the daily intake of nitrate amount. Luckily, at Greentest, we have a nitrate tester that can help you determine if vegetables are safe to eat or not and will show you the nitrate level of the foods you need to eat, thus you can control the nitrate level intake to your body to protect your healthy.


Where do high levels of nitrate in vegetables come from?

You may carious about why some vegetables and fruits are have high level of nitrate and some of them are not. It is because some farmers have to do whatever they can to grow enough vegetables to meet that demand. Sometimes, this leads to the use of nitrogen fertilizers, as it helps the vegetables to grow faster, but unfortunately, this can lead to unsafe levels of nitrate in the vegetables. Additionally, when vegetables don’t have the sunlight exposure they need, it can cause high levels of nitrates to occur.


Nitrate poisoning can be a serious problem, and research has proven that it can lead it cancer. Methemoglobinemia is a blood disorder that inhibits the distribution of oxygen throughout the body, and it is also caused by nitrate poisoning. Don’t take the risk! Ensure that you are providing yourself and your family with vegetables that are not only nutrient dense, but also safe to eat. Shop our nitrate testers online today, and please contact us if you have questions or concerns.

Greentest is a portable nitrate tester, and Greentest Eco is a portable nitrate tester and Radiation tester and personal counter, you can choose the right one account to your needs. Inquire now if you need to buy bulk or start your local business.

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The Relationship Between the Vegetable & Fruit Freshness and Nitrite Content

We know that fruits and vegetables contain nitrate. The nitrate in fruits and vegetables mainly from artificial fertilizers such as ammonium nitrate, calcium nitrate, potassium nitrate, sodium nitrate and urea nitrogen in fertilizer by soil transfer.

Fruits and vegetables after nitrogen absorption, often to nitrate are temporarily stored in the body. Inorganic compounds in leafy vegetables such as spinach, celery, cabbage, Chinese cabbage, cabbage, lettuce, leeks, sugar beet, cauliflower, radish leaves, Chenopodium album, shepherd’s purse and other, but the content is rare. General fresh edible had no effect.


However, if the vegetables are not fresh, nitrate will be converted to nitrite in plants, resulting in a significant increase in the content of nitrite.

Short time in eating a lot of vegetables, a lot of nitrate into the intestinal tract, intestinal bacteria the conversion of nitrate to nitrite, in the intestine too much too quickly formed that late decomposition, a large number of nitrite into the blood will cause poisoning. Just pickled vegetables contain a large number of nitrite, 7-8 days reached the peak, 15 days decreased, 20 days after the disappearance. In order to avoid corruption and nitrite content, fresh fruits and vegetables is best not to long-term preservation, storage should be low temperature storage, such as frozen. Pickled vegetables to 15 days after edible.

Nitrite is toxic, in the food processing industry is most common is sodium nitrite. Very similar to the properties of sodium nitrite with our daily consumption of salt is often used as food additive coloration and antiseptic effect, widely used in meat, sausages and canned meat food. In fruits and vegetables in order to reduce the conversion of nitrate to nitrite content we suggest as far as possible the selection of fresh fruits and vegetables.

How to judge the fruits and vegetables are fresh? We usually choose the morning to buy fruits and vegetables, because the fruits and vegetables just listed, a relatively new; secondly, the most used method is observed, inspect the vegetable leaves will not yellow, rotten leaves.Fresh vegetable Chui brilliant and root fertilizer with straight is preferred.

In addition, you can also use nitrate detector to test nitrate content in vegetables and fruits determine whether they are fresh. nitrate test kit can help you test the nitrate and pesticides in your fruits and vegetables thus  you can control the too much harmful substance intake to your body.



The Best Way to Eat Anticancer Broccoli

How to eat broccoli can help us anticancer? Broccoli have a certain anti-cancer effect , but if not eat right and it can not play the broccoli anti-cancer role. Today, it is necessary to introduce the best way to eat broccoli so it can paly its anti-cancer role.

Broccoli steam cooking is the best way to help anti-cancer. Once the myrosinase was destroyed, there is no anticancer effect. So compared with other cooking methods, broccoli water resisting steamed for about 5 minutes, myrosinase best preserved, so that it can help to anti-cancer.

When heating Broccoli 60 C. The researchers found that a university in the United States, to get the anti-cancer substances of broccoli, involves two kinds of proteins. One is that sulforaphane glycosidase released, another is a sulfur binding protein. The sulfur binding protein to sulforaphane has just released lost activity.

The ideal state is to maintain the enzyme activity, but to the sulfur binding protein exterminate, so that it will be unable to destroy anti-cancer substances. Study found, sulfur binding protein than the enzyme was more afraid of heat. It is found by experiments, as long as the green cauliflower is heated to 60 degrees is ideal. This temperature, sulfur binding protein has been inactivated, while the enzyme remained active, can play to maximize the anticancer activity of broccoli.

At last, kindly remind that test broccoli nitrate level with Greentest nitrate tester before buying, as broccoli have a high level of nitrate and pesticides. Pick up the safety one can help to protect us not to intake too much harmful substance.


Learn How to cook Broccoli

How to buy fresh Broccoli



9 Major Benefits of Eating Tomatoes

Tomatoes are rich in nutrition, usually tomatoes will bring you a lot of unexpected benefits. Tomatoes contain rich vitamin A, vitamin C, vitamin K, vitamin B6, folic acid, potassium, magnesium, rich thiamine, niacin, phosphorus and copper. These are the substances needed to keep the body healthy. The biggest advantage of tomatoes is its cholesterol, saturated fat, sodium and calorie content is very low. You can add in your sandwiches, salad, sauces, ice fruit juice and soup with tomatoes. Please see below, you’ll love every day to eat tomatoes.


1. Improve vision

Tomatoes are vitamin A and vitamin C of the very good source which can improve your eyesight and prevent nyctalopia. Recent studies show that eat vitamin a high content of tomato can help prevent macular degeneration, which is a serious eye disease. In addition, the tomato can lower your risk of cataract risk. Tomatoes are also a good source of phytochemicals with antioxidant, lycopene, lutein and zeaxanthin. These can protect your eyes from damage caused by light stimulation.

2. Prevention of cancer

According to an article: Research in the Journal of the National Cancer Institute showed that eating more tomatoes can prevent prostate cancer. Tomatoes can also help to reduce some other cancers, such as gastric cancer, lung cancer, cervical, pharynx, larynx, oral cavity, rectum, colon, esophagus cancer and ovarian cancer risk. This is because tomatoes contain rich to the antioxidant lycopene. If you want to improve the anticancer effect of tomato, you can use olive oil to cook, the effect will be better.

3. Improve skin

Eat tomatoes regularly can make your skin look more detailed. Tomatoes contain lycopene element is a good antioxidant, can protect your skin from sun damage. Ultraviolet light can cause wrinkles, and you can with tomatoes in the treatment of acne and skin rashes and reduce large pores. It can make your skin to ultraviolet light less sensitive. You can with tomatoes in the treatment of acne and skin rashes and reduce the coarse pores. In your skin dark heavy place clean tomato paste, can restore a healthy color.

4. Lower blood sugar

Tomatoes contain very little carbohydrate, it will help to reduce the level of blood glucose. Tomatoes also contain chromium and fiber, the former is beneficial to control the blood glucose level, the latter is beneficial to prevent blood glucose levels are too high. Some studies have found that tomatoes contain powerful antioxidants can protect the circulation of the blood and kidney. These places are often affected by diabetes.

5. Improve sleep

Tomato is a tomato red element and vitamin C rich sources can help you sleep better. So, if you have trouble falling asleep, you can consider the tomatoes to your daily diet. You can in your soup or salad add tomatoes, or in your smoothie put a tomato.

6. Keep your bones healthy

Tomatoes contain vitamin K and calcium helps to maintain bone health. Therefore, eating tomatoes will help to strengthen and repair your bones. And it has been shown that, the antioxidant lycopene element can be improve bone mass and prevent osteoporosis. Osteoporosis is a serious disease, can lead to the fracture, bone deformities, and disability.

7. Relieve chronic pain

Because carotenoids and the presence of flavonoids of anti-inflammatory agents, tomatoes can be chronic pain relief. Often suffer from mild or moderate pain, usually of inflammation. Studies have shown that, drink a cup of tomato juice every day can reduce blood TNF alpha induced inflammation, about 34%. Therefore, tomatoes on those benefits have chronic health problems, such as heart disease, osteoporosis, cancer and Alzheimer’s disease.

8. Good to your hair

Tomatoes is also very good to your hair. They are rich in vitamins and iron, to make your hair more strong, can even let your damaged and no angry hair shiny. In addition, the tomatoes have a certain amount of acid, can make hair pH balance. If you head skin itching and dandruff, shampoo, pour fresh tomato sauce on your hair and scalp, 4 to 5 minutes. Rinse with cold water or warm water. But do not be too frequent use tomatoes, because of their acidity can make your hair becomes dry.

9. Helps to lose weight

If you want to put the extra weight lose, to ensure that every day you will tomatoes into your bowl of rice. They are low in fat, and contain no cholesterol. The tomato contains rich in fiber and water, so they will make you feel full, without the extra calories intake. You can eat raw tomatoes or add them to your casserole dish, salad, slimming and other packages.

Eat tomatoes every day, whether it is fresh, dried, stewed, jam or juice, will be good for your health. Do you like tomatoes? Do you know how good they are to health?

How to remove pesticides in vegetables

Vegetable is a good source of  human vitamin intake, and espercially in fresh vegetable, there are more nutrition good to our healthy. But now the concern is vitamin rich vegetables although is good for the body, but there are some pesticides on the vegetables , so when buying vegetables we are worried about whether there was residual pesticides. How to clean the pesticide residues in vegetables? Here is a simple and effective way for you.


1. Dry vegetables in the sun

Mostly organic phosphorus pesticides, carbamate pesticides, and these pesticides are volatile, volatile in the sunlight. After picking vegetables, stacked together, the transportation, the poor ventilation and not easily by sunlight, so it is best to dry your vegetable in the sun before cooking  decrease with the volatility of pesticide residues. Of course, there are people who are worried about the loss of nutrients in the sun.

2, Clean Vegetables with alkali

When cleaning vegetable in the water , it is suggested add a small amount of baking soda or alkali powder, the amount of soaking, can play a very good cleaning effect.

3. Use vegetable washing agent

There are already have a lot of vegetable washing agent on the market,but it is best to carefully choose this kind of washing agent, and sometimes when it is hard to remove the pesticides in your vegetables, you can use some of these washing agent to help you. Remember not to use it everytime as not all the washing agent is good to remove.

4. Peeled, brush your vegetables

Vegetables such as bitter gourd can be used in other ways, such as peeling and using tools such as a soft brush to clean.

5. Boiled vegetables

Under the condition of high temperature can also remove part of the pesticide, such as celery, broccoli and other vegetables, boiled with boiling water can be a lot of pesticides.

When buying vegetables, it is suggested that you can use nitrate tester to test vegetables, check them whether they have high amount of pesticides, often when it contain of pesticides its nitrate level will be high and this kinds of nitrate tester can be test and show the vegetable is safe or unsafe to eat.


With Adhesive Tape Packaging of Vegetables and Fruits Formaldehyde Exceeded 10 Times

People often go to the supermarket to buy food may be found that a lot of fresh vegetables are wrapped in colorful tape, in this regard, some news reported that the packaging of vegetables formaldehyde exceeded 10 times!

Adhesive Tape Packaging of Vegetables

Experts pointed out that part of the supermarket used basic industrial tape to pack the food, this tape containing benzene, formaldehyde, heavy metals and other harmful substances. Therefore, he suggested that consumers try to peel and cut off, or remove the the fruit or vegetables by direct contact tape.

Many vegetables in a supermarket District sell spinach found that Chinese cabbage, cucumber and other vegetables, are packed by purple or green tape,some price tag directly attached on the vegetables.

With adhesive tape bundled vegetables, fruit phenomenon is very common, it is mainly for the convenience of customers to choose and buy, looks more beautiful and tidy.

Industrial tape containing benzene, formaldehyde, heavy metals and other harmful substances, not suitable for food packaging materials, in addition to the surface of the tape printing ink benzene substances through the skin of vegetables vegetables to the interior of the migration, the gum base portion of the plastic itself often contains a plasticizer.

We make a test on these kind of vegetables, results show that, contact with the tape of  some vegetables formaldehyde actually exceeded ten times. Therefore, the expert points out, long-term consumption of these fruits and vegetables, will produce toxic side effects of digestive system and liver and kidney function.

So when buying vegetables and fruits, it is suggested that not to buy the packing one or remove the one which contacted by this kind of tape. And we remmend you to use nitrate tester to test the food is safe or not before cooking them.

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4 Tips to Avoid Nitrate in Vegetable and Fruit

Vegetables and fruits are indispensable in our daily life, but if we don’t pay attention edible health, they will bring harm to our body healthy. Especially in hot summer, it will bring diseases if we eat the unsafe vegetable and fruit. And here for all of you, we conclude five tips on how to eat vegetable and fruits in healthy way.

1. Prevent Intestinal Pathogenic Bacteria and Parasite Contamination

Farmers use chemical fertilizers, farmyard manure etc when growing the plants. The bacteria and parasites on the fertilizers still has strong vitality on the plants. Most of these arvested vegetables and fruit are on the market without washing. We can often see cabbage, spinach and other residual stool trace or with a bad smell on the vegetables. Therefore, it is strong recommend washing raw fruitsand vegetables before eating in canse we may cause intestinal infectious diseases.


Epidemiological investigation confirmed that the disease is spread by the unhealthy vegetables, fruits . Now many people are afraid of  fertilizer growing vegetable and like organic vegetables. We must wash vegetables thoroughly before cooking, general after cleaning the bacteria can reduce less about 80%.And here are some tips on how to eat vegetable and fruit healthy.

2. Prevent deterioration of the decay and excessive intake of nitrite

Fresh fruits and vegetables contain a certain amount of nitrate and nitrite, after storing for a period of time, water evaporation after the dry, under the action of microorganisms and nitrate conversion to nitrite. If the vegetables, the fruit epidermis have been damaged, canker, microorganism was easy to invade the, vegetable, nitrite content in fruit increased.Dry and deterioration of fruits and vegetables, whether human or animals after eating can occur nitrite poisoning. Not only that, if the food deterioration due to containing amines, it will produce strong carcinogens – nitrosamines, on the human body have potential hazards.


3.Prevent Pollution of Vegetables Caused by Sewage Irrigation

Sewage mainly refers to the discharge of industrial waste water and domestic water, industrial wastewater containing many kinds of toxic chemicals, such as phenols, cyanide, heavy metals, sewage often contain a large number of eggs and various pathogenic bacteria and various washing supplies a variety of harmful chemical substances, the water if not through the sound processing, it is used to as irrigation water, not only affects the growth of vegetables, but also to eat healthy harm.

Therefore, in the choice of vegetables, as far as possible to choose elevated crops, such as tomato, bean, cucumber and smooth surface of vegetables such as eggplant, pepper and so on to reduce pollution. To put vegetables should pay attention to choose without spot, no rust rot traces, vegetables fresh luster, after thoroughly cooked. If you want to some raw vegetables and fruits, preferably with light saline soak a few minutes the safest.


4. Prevent Pesticide Pollution

Pesticide contamination of food, there are many ways, but the most direct pollution is sprayed. Therefore, pesticide pollution of vegetables, fruits, on the surface of pesticide residual quantity highest, if you do not pay attention, often make a person anxious chronic poisoning. Family organic phosphorus pesticide poisoning have been reported.


In the purchase of food,be carefully, especially vegetables, leafy vegetables), if the surface is white or yellow spots of the dishes do not buy, because they may be immediately after spraying pesticides after picking, pesticide residue high amount. Buy vegetables best water fully after cleaning, then soak for a few minutes or longer time. By cleaning can greatly reduce the amount of pesticide residues in vegetables. The underground stem or vegetables such as potatoes and cucumbers, use a soft brush fully cleaned.

The pesticide residues are high in the surface of the fruit, for the sake of safety, or peeling as well.

At last, it is recommend we use Greentest nitrate tester to check the fruit and vegetable is safe or not before eating.



How to buy fresh Broccoli

How to buy fresh vegetables? Vegetables are usually at their best quality and price at the peak of their season. Fresh vegetables are key ingredients in the kitchen. With the right preparation and some of your homemade creativity, they make everyday meals just as magical as special occasions. Don’t buy because of low price alone. It doesn’t pay to buy more vegetables than you can properly store in your refrigerator or use without waste.

When purchasing broccoli, select ones where the stalks are tight and firm.  Look at the stalk and make sure it’s not tough. The buds should be tightly closed and the leaves are crisp and very green. The little ‘trees’ or florets should be dark green. Also note that if the broccoli tends to have a very strong smell or if the leaves have a slightly yellow color, it can often suggest that it is old. Try and avoid broccoli where the buds are yellow in color.

Howerver, nowadays, not everying you see is organic as  farmers used too large amount of fertilizers to help the plant growth, and it wil cause the vegetable has many harmful substances inside, such as the large amout of nitrate and nitrite. And we need to control the amount of nitrate to our body. So it is very essential to buy a really organic broccoli

Greentest is  protable nitrate tester for you to detect harmful substances inside fresh fruits and vegetables. It is very easy to use to check the nitrate level of broccoli.

1. Choose fruit/vegetable category
2. Insert the probe and press”Start Test”
3. Get the results in 3 seconds