Nav: Home

Food supplements

November 14, 2017

In addition to Aloe barbadensis, however, other Aloe species are used for many different purposes. Inter alia, the sap of the pressed, whole, unpeeled leaves of Aloe arborescens (krantz aloe, candelabra aloe) is marketed in the form of food supplements. The German Federal Institute for Risk Assessment (BfR) has assessed the possible health risks of such food supplements. The outer layers of the leaves of Aloe arborescens are of toxicological relevance. As with all Aloe species, these layers contain plant-based anthranoids which have long been suspected of having a genotoxic and carcinogenic effect. In addition to data on the pure substances, tests have also been conducted in the meantime on anthranoid-containing preparations made from Aloe leaves. The results of these long-term studies also confirm the suspicion of carcinogenicity, but there are data gaps which should be closed with regard to the details and mechanisms of cancer development.

The BfR comes to the following conclusion on the basis of the available data: according to the latest guidelines issued by the European Food Safety Authority (EFSA) for the assessment of botanical preparations, products which contain preparations of the unpeeled leaves of Aloe arborescens, and thereby anthranoids, do not belong to the category of botanical food supplements which can be designated as being of "no safety concern" based on current knowledge. Due to the suspicion that plant-based anthranoids have a carcinogenic effect in humans, the BfR does not consider preparations containing anthranoids to be suitable for use in foods, including food supplements. This assessment does not apply to preparations made from anthranoid-free gel or inner pulp from the leaves of Aloe species (mostly Aloe barbadensis or Aloe vera), which are commonly used in foods and cosmetics in the EU. Anthranoids should generally not be present in foods in the view of the BfR. When producing foods with leaves of plants of the Aloe genus, the anthranoid-containing outer leaf layers should be carefully removed in order to keep contamination with anthranoids, which are suspected carcinogens, as low as possible.
-end-
The full version of this BfR opinion is available in German on: http://www.bfr.bund.de/cm/343/nahrungsergaenzungsmittel-mit-anthranoidhaltigen-aloeganzblattzubereitungen-bergen-gesundheitliche-risiken.pdf

BfR Federal Institute for Risk Assessment

Related Plants Articles:

Transgenic plants against malaria
Scientists have discovered a gene that allows to double the production of artemisinin in the Artemisia annua plant.
How plants can tell friend from foe
The plant's immune system can recognize whether a piece of RNA is an invader or not based on whether the RNA has a threaded bead-like structure at the end, say University of Tokyo researchers.
Plants at the pump
Regular, unleaded or algae? That's a choice drivers could make at the pump one day.
How do people choose what plants to use?
There are about 400,000 species of plants in the world.
Defend or grow? These plants do both
From natural ecosystems to farmers' fields, plants face a dilemma of energy use: outgrow and outcompete their neighbors for light, or defend themselves against insects and disease.
How do plants protect themselves against sunburn?
To protect themselves against UV-B, which are highly harmful, plants have developed cellular tools to detect them and build biochemical defenses.
Pea plants demonstrate ability to 'gamble' -- a first in plants
An international team of scientists from Oxford University, UK, and Tel-Hai College, Israel, has shown that pea plants can demonstrate sensitivity to risk -- namely, that they can make adaptive choices that take into account environmental variance, an ability previously unknown outside the animal kingdom.
A 'Fitbit' for plants?
Knowing what physical traits a plant has is called phenotyping.
How plants conquered the land
Research at the University of Leeds has identified a key gene that assisted the transition of plants from water to the land around 500 million years ago.
Plants are 'biting' back
Calcium phosphate is a widespread biomineral in the animal kingdom: Bones and teeth largely consist of this very tough mineral substance.

Related Plants Reading:

Urban Jungle: Living and Styling with Plants
by Igor Josifovic (Author), Judith de Graaff (Author)

Provides all your DIY ideas for styling and tips on how to plantInspiration for seasoned plant lovers as well as beginners, providing the total package on the topic of living with plantsUrban Jungle: Living and Styling with Plants is a source of inspiration, ideas and a manual for all of those who want to bring more plants into their home.

The book guides the reader through different "green" homes in five European countries and shows how beautiful, unique, creative and even artistic living with plants can be. More than that the reader finds endless ideas for styling from the... View Details


The Plant Paradox: The Hidden Dangers in "Healthy" Foods That Cause Disease and Weight Gain
by Dr. Steven R Gundry M.D. (Author)

“Dr. Gundry is a true trailblazer, always at the forefront of scientific knowledge. The Plant Paradox shows the world what pioneer thinking is about and is a must-read book for anyone interested in being as healthy as nature has designed them to be.” —Alejandro Junger MD, New York Times bestselling author of Clean, Clean Gut and Clean Eats

The Plant Paradox elegantly explains how plants defend themselves from being consumed by humans, and how eating the wrong ones at the wrong times immeasurably hurts our health.... View Details


Plant: Exploring the Botanical World
by Phaidon Editors (Author)

The ultimate gift for gardeners and art-lovers, featuring 300 of the most beautiful and pioneering botanical images ever

Following in the footsteps of the international bestseller Map: Exploring the World, this fresh and visually stunning survey celebrates the extraordinary beauty and diversity of plants. It combines photographs and cutting-edge micrograph scans with watercolours, drawings, and prints to bring this universally popular and captivating subject vividly to life. Carefully selected by an international panel of experts and arranged in a uniquely... View Details


Plant-Based Nutrition, 2E (Idiot's Guides)
by Julieanna Hever M.S. R.D. (Author), Raymond J. Cronise (Author), Penn Jillette (Foreword)

Whether you’re vegan, vegetarian, or omnivore, getting your nutrition from plant-based foods is one of the best things you can do for your health—and it’s easier than you might think!
 
The science confirms that a diet rich in whole, plant-based foods can help your body thrive. In fact, a growing number of physicians advocate a completely plant-based diet for many of their patients who suffer from diabetes, heart disease, and cancer. In this all new edition, leading plant-based dietician, Julieanna Hever, and Ray Cronise, the mastermind behind magician Penn Jillette’s... View Details


Forks Over Knives: The Plant-Based Way to Health
by Gene Stone (Editor), T. Colin Campbell (Editor), Caldwell B. Esselstyn (Editor)

The #1 New York Times bestseller answers: What if one simple change could save you from heart disease, diabetes, and cancer?

For decades, that question has fascinated a small circle of impassioned doctors and researchers—and now, their life-changing research is making headlines in the hit documentary Forks Over Knives. Their answer? Eat a whole-foods, plant-based diet—it could save your life.

It may overturn most of the diet advice you’ve heard—but the experts behind Forks Over Knives aren’t afraid to make waves. In... View Details


American Horticultural Society Plant Propagation: The Fully Illustrated Plant-by-Plant Manual of Practical Techniques
by Alan Toogood (Author)

This comprehensive guide contains all the techniques you need with easy-to-follow, step-by-step explanations of how to propagate your plant. Whether you want to increase your plants by the easiest or most reliable methods of propagation, experiment with more unusual or advanced techniques, or use specialized techniques for a favorite plant group, you will find everything you need in this approachable handbook.

Want to know the best way to propagate a particular plant?  Each entry in the A-Z section of this book tells you which method of propagation to use, when to do it, and what... View Details


Pacific Northwest Medicinal Plants: Identify, Harvest, and Use 120 Wild Herbs for Health and Wellness
by Scott Kloos (Author)

Unleash the healing power of wild plants

Pacific Northwest Medicinal Plants is an accessible introduction to finding and using wild plants for health and wellness. Beginners seeking reliable advice and experienced practitioners on the hunt for new information alike will delight in the plant profiles, color photographs, step-by-step instruction for essential herbal remedies, and seasonal foraging tips. This indispensable guide to finding, harvesting, and using wild plants is for wildcrafters in Alaska, Oregon, Washington, northern California, and British... View Details


Plants and Society
by Estelle Levetin (Author), Karen McMahon (Author)

This introductory, one quarter/one-semester text takes a multidisciplinary approach to studying the relationship between plants and people. The authors strive to stimulate interest in plant science and encourage students to further their studies in botany. Also, by exposing students to society's historical connection to plants, Levetin and McMahon hope to instill a greater appreciation for the botanical world. Plants and Society covers basic principles of botany with strong emphasis on the economic aspects and social implications of plants and fungi. View Details


Edible Wild Plants: A North American Field Guide to Over 200 Natural Foods
by Thomas Elias (Author), Peter Dykeman (Author)

“Beautiful color photographs . . . temptingly arranged.”—The Library Letter

Planning an outdoor adventure? Make sure to consult this information-packed and photo-filled North American field guide—arranged by season and region—before you go!

Already a huge success in previous editions, this must-have field guide now features a fresh new cover, as well as nearly 400 color photos and detailed information on more than 200 species of edible plants all across North America.

With all the plants conveniently organized by season,... View Details


The Secret Life of Plants: a Fascinating Account of the Physical, Emotional, and Spiritual Relations Between Plants and Man
by Peter Tompkins (Author), Christopher Bird (Author)

The world of plants and its relation to mankind as revealed by the latest scientific discoveries. "Plenty of hard facts and astounding scientific and practical lore."--Newsweek View Details

Best Science Podcasts 2018

We have hand picked the best science podcasts for 2018. Sit back and enjoy new science podcasts updated daily from your favorite science news services and scientists.
Now Playing: TED Radio Hour

The Big Five
What are the five biggest global challenges we face right now — and what can we do about them? This hour, TED speakers explore some radical solutions to these enduring problems. Guests include geoengineer Tim Kruger, president of the International Rescue Committee David Miliband, political scientist Ian Bremmer, global data analyst Sarah Menker, and historian Rutger Bregman.
Now Playing: Science for the People

#456 Inside a Conservation NGO
This week we take a close look at conservation NGOS: what they do, how they work, and - most importantly - why we need them. We'll be speaking with Shyla Raghav, the Climate Change Lead at Conservation International, about using strategy and policy to tackle climate change. Then we'll speak with Rebecca Shaw, Lead Scientist at the World Wildlife Fund, about how and why you should get involved with conservation initiatives.