EGW (Environmental Working Group) puts out the list of “Clean 15” and “Dirty Dozen” fruits and vegetables each year.
These 15 fruits and vegetables makes up the “Clean 15” list because they are the least likely to be contaminated with pesticide residues.
You can access the Clean 15 list on the EGW website at https://bit.ly/2GQIZT4
SPEX CertiPrep Application Note: Examination of Pesticides in Wine, Beer and their Constituent Products Using High-Throughput Techniques to Maximize Extraction & Efficiency.
There are hundreds of commercial pesticides in use in industrial and private agriculture. Concern over the health effects of residual pesticides on fruits and vegetables has led to increased testing of these products to determine the levels of pesticides on produce when it goes to market.
In this study, commercial red wine and beer samples were examined for their pesticide concentrations. In addition to the examination of the finished alcoholic beverage, the constituent agriculture products of wine and beer production (grains, malts hops and wine grapes) were also examined to determine the levels of pesticides found in those products. The sample preparation and extraction process efficiency and recovery were examined by processing samples using manual versus high-throughput techniques. The QuEChERS method was used to process a greater number of samples in a shorter period of time than other extraction methods.
Read the full application note here
SPEX CertiPrep • 732.549.7144 • CRMMarketing@spex.com
The EGW (Environmental Working Group) has released the list of the 12 fruits and vegetables containing the highest pesticide residue levels.
You can view the list of the “Dirty Dozen” as well as various other resources on the EGW website at https://bit.ly/2HaLLpU
SPEX CertiPrep offers a range of matrix-matched standards, specifically designed for the needs of various types of industrial hygiene and air monitoring programs.
The trace metals on mixed cellulose ester filters are specifically formulated to meet testing requirements such as National Institute for Occupational Safety and Health (NIOSH) 7300 Series Methods, ASTM Standard D7035, ISO Standard 15202-1 and 15202-2, and CEN (EN) Standard 13890.
Trace metals on quartz filters are designed to meet the testing requirements of EPA IO-3 and are also available as stock products.
Custom spiked filters are available upon request.
Complete details here.
Breast cancer awareness is an effort to raise awareness and reduce the stigma of breast cancer through education on symptoms and treatment. At SPEX CertiPrep, we support the hope that greater knowledge will lead to earlier detection of breast cancer, which is associated with higher long-term survival rates, and that money raised for breast cancer will produce a reliable, permanent cure.
Awareness needs to be ongoing so we are putting pink in your lab.
Every US web order in the month of October will receive a free pink vial rack. The pink vial rack will brighten up your bench space and be a reminder to take the steps to plan and detect breast cancer in its early stages and encourage others to do the same.
Did you know?
- About 1 in 8 U.S. women (about 12.4%) will develop invasive breast cancer over the course of her lifetime
- In 2018, an estimated 266,120 new cases of invasive breast cancer are expected to be diagnosed in women in the U.S., along with 63,960 new cases of non-invasive (in situ) breast cancer
- For women in the U.S., breast cancer death rates are higher than those for any other cancer, besides lung cancer
- About 85% of breast cancers occur in women who have no family history of breast cancer. These occur due to genetic mutations that happen as a result of the aging process and life in general, rather than inherited mutations
Source: BreastCancer.org https://bit.ly/2NhthCS
How Much Lightning Is In Your Morning Jolt: A Study of the Concentration of Caffeine and Other Organic Coffee Marker Molecules in Fast Food and Home-Brewed Coffee
Coffee is a major world commodity with 7 million metric tons of coffee produced annually. Roasted coffee beans can contain well over a thousand different compounds. In most cases, the most important of those chemicals are the flavor compounds (i.e. chlorogenic acids, polyphenols, terpenes, etc.) and caffeine. Other compounds, such as methyl cafestol and homostachydrine, can be important in fingerprinting the authenticity and adulteration of coffee and coffee species.
This study created chemical profiles of coffee around targeted groups of chemical markers in coffee to determine: caffeine content (and decaffeination by-products), coffee or species authenticity, and adulteration and safety of coffee using LC/MS. Brewed regular roast and decaffeinated coffee was purchased from multiple chain fast food restaurants, coffee purveyors and convenience stores.
Samples of regular home brewed and pod brewed regular coffee were also tested for caffeine content, authenticity and flavor markers. Chemical profiling of some coffee samples showed misrepresentation of coffee species in some brewed coffees as well as the presence of higher than expected levels of caffeine in some samples. Also present were chemicals which indicated signs of either degraded coffee flavor or potential adulteration.
Cocoa plants are native to tropical climates with high levels of humidity and rainfall. This climate increases the need for pesticide application to protect the cocoa bean crops. Heavy metals from pesticide and fertilizer applications can accumulate in the soil and add to the possible accumulation of those metals in the cocoa beans.
This study examined the elemental composition of several types of chocolate products from chocolate liquor to milk and dark chocolate bars.
Click here for the complete app note ‘Analysis of Elemental Content in Commercial Chocolate Bars’: https://bit.ly/2Eo8luk
You can also view our infographic for facts about chocolate https://bit.ly/2oNmwix
Food adulteration and counterfeiting continues to grow as a worldwide issue of food safety and economic concern. Spices are one of the most commonly adulterated and counterfeited agricultural products in the US. Our previous study determined extensive elemental and heavy metals contamination and adulteration in spices. Many of our spice products were identified as possibly being highly adulterated or contaminated by metals. In our follow-up organic study, we focused on the organic markers and toxic organic compounds in our common spices and botanicals (black pepper and cinnamon) in various forms (i.e. spices, teas, condiments, and supplements) to determine if these products appeared to be adulterated from an organic compound standpoint as well as an elemental standpoint.
Cryogenic grinding and microwave extraction were employed in sample processing. Samples were extracted for the primary and secondary marker compounds native to each spice group and for any potentially toxic organic compounds (dyes, preservatives, pesticides, and industrial residual chemicals). The concentration and identity of compounds were compared across the groupings to cited concentration references for each marker or compound. Low concentrations of critical markers were found in low cost spice and botanical samples indicating potential adulteration. Samples that were previously suspect by ICP-MS examination were confirmed to be adulterated or economically compromised by reduced or absent concentration of these critical primary and secondary marker compounds. High levels of potentially toxic chemicals were also found in some of the previously suspect spice and spice product samples.
Click here for the complete app note ‘Identifying Counterfeiting, Adulteration & Contamination of Spices’: https://bit.ly/2Q22JZ3
You can also view our infographic for facts about spices https://bit.ly/2Cnardv
For years, the American Heart Association has recommended eating an average of two to three fishmeals each week to help reduce cholesterol, high blood pressure, and hardening of arteries. Research shows that consuming fish increases high quality protein with fewer calories, and it is rich in omega-3 fatty acids. Omega-3 fatty acid helps to reduce the risk of coronary artery disease, helps in the treatment of bipolar disorder/depression, and helps reduce inflammation in autoimmune diseases (1,4). Fish are also low in sodium and a good source of potassium. Some examples of fatty, coldwater fish that are high in omega-3 fatty acids include salmon, mackerel, and herring.
Unfortunately, due to industrial pollution, many fish have high levels of contaminants including mercury, methyl mercury, and PCBs (polychlorinated biphenyls), which are absorbed by surrounding waters and from foods they eat. Currently, the EPA limit for mercury in fish is 1 ppm. About 22% of all PCBs are in estuarine and coastal sediments, which accounts for 95% of the fish production (2). The EPA estimates up to 15% of mercury emissions from these utilities fall within 30 miles of a plant, and up to 50% falls within six hundred miles. The mercury bio-accumulates through the food chain and reaches the predator species. For example, a Nevada reservoir fish tissue sample shows an average of 0.47 ppm mercury; the EPA guidelines recommend limiting consumption of such fish to one 8-ounce meal per month for adults (3).
For humans, mercury and methyl mercury are toxic and can damage the brain and the nervous system. Mercury poisoning symptoms include numbness in hands and feet, general muscle weakness, and vision, hearing, and speech damage. In extreme cases, insanity, paralysis, coma, and death follow. The U.S. Food and Drug Administration and the EPA advised pregnant women and those who might become pregnant to avoid certain fish known to be high in mercury. This study will investigate trace element concentrations including heavy metal concentrations in different types of fish and fish oil supplements available from local markets in New Jersey.
Click here for the complete app note ‘Trace Elements in Fish and Fish Oil Supplements’: https://bit.ly/2Q1Yn41
You can also view our infographic for facts about the benefits and risks of fish consumption https://bit.ly/2wN3zB4