Air quality with plants that detoxify the polluted air in homes

Are plants air cleaners ?


Benzene, formaldehyde, trichloroethylene, ammonium chloride, pentachlorophenol (pcp), carbon monoxide, radiation from our appliances like computer monitors and television sets... air within our homes , classrooms, kindergartens, offices and factories is significantly more polluted than the air outside. All habitats with low ventilation and with an aim to reduce energy costs caused by air purifier devices are concerned. Awareness of this public health issue has much improved over the recent years. The U.S. Environmental Protection Agency ranks now indoor air pollution—which originates from many conventional building materials and chemicals commonly used indoor —as one of the top five threats to public health. An average American home has 100 to 200 different air contaminants.

International agencies such as WHO or Greenpeace have issued precise guidelines and warnings based on scientific findings that are worth reading and thinking over. [see our post : WHO and Greenpeace warnings ] The findings are alarming, especially considering that most of us spend our time dwelling in our homes and in office buildings.

" Since man's existence on Earth depends upon a life support system involving an intricate relationship with plants and their associated microorganisms, it should be obvious that when he attempts to isolate himself in tightly sealed buildings away from this ecological system, problems will arise. " says Wolverton a former NASA scientist in " Interior Landscape Plants for Indoor Pollution Abatement".

In the eighties the NASA researched techniques for cleansing the atmosphere in space stations to keep their habitat fit for travels over extended periods of time. Unexpected experiment results over two years in investigations supported by the NASA and the Associated Landscape contractors of America (ALCA) [see below : Scientific sources ] confirmed that certain tropical plants with low light requirements were able to use stunning mechanisms to remove harmful gases out of the air, thanks to their particular ability to photosynthesize in harder conditions. This removal is more efficient with time. We show below test results after only 24 hours of exposure. The results are just amazing. Certain plants clean air in habitats : this can be up to 90 % of the volatile pollutants.

Since then an increasing number of laboratories the world over have sustained that a wide range of volatile contaminants toxic to human health could be efficiently trapped and degraded with certain plants that have evolved in tropical forests. We show below a chart of the plants with the corresponding rates of degradation.

Further below on this page is an extended A to Z list of the plants that have been tested by various programmes following the first experiments cited above. Not only are these tropical and sub tropical plants able to tolerate low light, they are generally easy growers with low maintenance requirements. They are ideal for promoting green choices in our indoor setting. Some are supplied by aleyagarden.com

It would be demonstrated that one plant for every 10 square metres suffices to remove out of a room 70 - 90 % of the pollutants, provided that several species are mixed. The time of removal varies from a few hours to only a few days. [see below : Air Cleaning Plants in Scientific Literature]

SOURCES of the AIRBORNE POLLUTANTS :
Sources of airborne Benzene : Petroleum Products Synthetic Fibers Plastics Inks & DyesRubber Products Detergents Tobacco Smoke

Sources of airborne Formaldehyde : Foam Insulation Plywood or Particle Board
Carpeting Furniture Paper Products Cleaners

Sources of airborne Trichloroethylene : Dry Cleaning Inks & Dyes Adhesives Varnishes Lacquers Paints
 Plant species that are most efficient at air decontamination - they are listed below - originate from tropical and sub-tropical forests, where they evolved receiving light filtered through the canopy : in order to survive they used a leaf composition allowing them to photosynthesize efficiently despite the reduced light. In this connection they could find ways to process gasses in the air efficiently.
PLANTS that DECONTAMINATE VOLATILE POLLUTANTS THROUGH THE PROCESSES OF PHOTOSYNTHESIS
Removal from a Sealed Experimental Chamber by Houseplants During a 24-h Exposure Period
Plants breaking down Benzene & % of Benzene d ecomposition : Hedera helix 90%  Spatiphyllum 80% Dracaena marginata 79% Dracaena deremensis 78% Dracaena deremensis
'Warneckii' 70% Sansevieria spp 48%
Plants breaking down Formaldehyde & % of Formaldehyde decomposition : Aloe barbadensis 90% Chlorophytum comosum 86% Philodendron 86-76% Dracaena fragrans 70%
Dracaena Massangeana 70% Ficus benjamina 70% Epipremnum aureum 67% Syngonium
podophyllum 67% Dracaena marginata 60% Dracaena deremensis Warneckii
50% Spathiphyllum 50%
Plants breaking down Trichloroethylene & % of Trichloroethylene decomposition : Spathiphyllum 50% Dracaena deremensis Warneckii 24% Dracaena deremensis 20% Dracaena marginata 13% Hedera helix 11%
Plants breaking down carbon monoxide & % of carbon monoxide decomposition : Chlorophytum comosum 96% Epipremnum aureus 75%
----------------------------------------
A
Aechmea fasciata
Aglaonema spp
Aloe vera
Anthurium spp
Areca catechu
Araucaria heterophylla

B
Begonia semperflorens

C
Calathea spp
Chamaedorea elegans
Chamaedorea seifrizii
Cissus rhombofilia
Chlorophytum spp
Chrysalidocarpus lutescens
Chrysanthemum morifolium
Codiaeum variegatum
Cyclamen persicum

D
Dendrobium spp
Dieffenbachia
Dracaena

E
Epipremnum spp
Euphorbia pulcherrima

F
Ficus spp

G
Gerbera jamesonii

H
Hedera helix
Homalomena spp

K
Kalanchoe blossfeldiana

L
Liriope spicata

M
Maranta leuconeura
Musa cavendishii

N
Nephrolepis exaltata
Nephrolepis obliterata

P
Phalaenopsis spp.
Philodendron spp
Phoenix robelenii

R
Rhapis excelsia
Rhododendron

S
Syngonium podophyllum
Sansevieria spp
Schefflera spp
Schlumbergera bridgesii Schlumbergera rhipsalidopsis
Spathiphyllum spp.









WHO air quality guidelines
http://www.euro.who.int/air/activities/20050223_4

Updated 08 January 2008

Table of contents

Preface (11kb PDF)

Part I. General

1. Introduction (35kb PDF)

2. Criteria used in establishing guideline values (70kb PDF)

3. Summary of the guidelines (39kb PDF)

4. Use of the guidelines in protecting public health (52kb PDF)

Part II. Evaluation of Human Health Risks

5. Organic pollutants

5.1 Acrylonitrile (178kb PDF) *

5.2 Benzene (83kb PDF)

5.3 Butadiene (72kb PDF)

5.4 Carbon disulfide (194kb PDF) *

5.5 Carbon monoxide (204kb PDF)

5.6 1,2-Dichloroethane (176kb PDF) *

5.7 Dichloromethane (184kb PDF)

5.8 Formaldehyde (284kb PDF)

5.9 Polycyclic aromatic hydrocarbons (PAHs) (104kb PDF)

5.10 Polychlorinated biphenyls (PCBs) (262kb PDF)

5.11 Polychlorinated dibenzodioxins (PCDDs) and dibenzofurans (PCDFs) (331kb PDF)

5.12 Styrene (314kb PDF)

5.13 Tetrachloroethylene (222kb PDF)

5.14 Toluene (91kb PDF)

5.15 Trichloroethylene (219kb PDF)

5.16 Vinyl chloride (181kb PDF) *

6. Inorganic pollutants

6.1 Arsenic (64kb PDF)

6.2 Asbestos (194kb PDF) *

6.3 Cadmium (200kb PDF)

6.4 Chromium (67kb PDF)

6.5 Fluoride (48kb PDF)

6.6 Hydrogen sulfide (148kb PDF) *

6.7 Lead (225kb PDF)

6.8 Manganese(183kb PDF)

6.9 Mercury (219kb PDF)

6.10 Nickel (64kb PDF)

6.11 Platinum (193kb PDF)

6.12 Vanadium (170kb PDF) *

7. Classical pollutants

7.1 Nitrogen dioxide (136kb PDF)

7.2 Ozone and other photochemical oxidants (289kb PDF)

7.3 Particulate matter (353kb PDF)

7.4 Sulfur dioxide (168kb PDF)

8. Indoor air pollutants

8.1 Environmental tobacco smoke (ETS) (99kb PDF)

8.2 Man-made vitreous fibres (MMVF) (229kb PDF)

8.3 Radon (224kb PDF)

Part III. Evaluation of Ecotoxic Effects

9. General approach (28kb PDF)

10. Effects of sulfur dioxide on vegetation - critical levels (243kb PDF)

11. Effects of nitrogen-containing air pollutants - critical levels (391kb PDF)

12. Effects of ozone on vegetation - critical levels (314kb PDF)

13. Indirect effects of acidifying compounds on natural systems - critical loads (196kb PDF)

14. Effects of airborne nitrogen pollutants on vegetation - critical loads (332kb PDF)

Annex I List of Contributors (183kb PDF)

(*) 1987 evaluation retained, not re-evaluated
writes in a reference report of November 2006


..." Cleaning up our chemical homes , changing the market to toxic - free products " :.... Chemicals out of control. Hazardous substances that are commonly used as chemical additives in consumer products can migrate out of the product over time. These same chemicals are consistently found in breast milk and umbilical cord blood, which demonstrates their wide, uncontrolled and undesired dispersion. Greenpeace testing has shown that hazardous, man-made chemicals are also widespread in house dust, rainwater and the bodies of eels. These substances can cause a wide range of health effects, including effects on the reproductive system, immune system and impacts on the nervous system and behavioural development. Exposure of the unborn child to minute quantities of hazardous substances can result in permanent irreversible damage... "
Hoya and other plant collections are for sale on aleyagarden.com Plant care is available in various posts of this blog. Contact : aleyagarden@hotmail.com




- Air Cleaning Plants in Scientific Literature.
This link http://ntrs.nasa.gov/search.jsp provides technical reports written by Dr. B. C. Wolverton. Click on the "NASA Technical Report Server" link above. At the search window, type wolverton into the box to gain access to a number of reports (most are downloadable in PDF format).
BULTEAU G., 2004, Définition d'une méthodologie d'évaluation des procédés d'élimination des composés organiques volatils de l'air intérieur, Thèse de Doctorat en Sciences pour l'ingénieur, spécialité génie des procédés, soutenue le10/12/04, Université de Nantes, 228 p.
CORNEJO J.J., MUNOZ F.G., MA C.Y. & STEWART A.J.,1999, “Studies on the decontamination of air by plants”,Ecotoxicology, 8, p.311-320.
DINGLE P., TAPSELL P. & HU S., 2000, “Reducing formaldehyde exposure in office environments using plants”, Bulletin of Environmental Contamination and Toxicology,64, p.302-308.
GIESE M., BAUER-DORANTH U., LANGEBARTELSC. & SANDERMANN H. Jr., 1994, “Detoxification of formaldehyde by the spider plant (Chlorophytum comosum L.) and by soybean (Glycine max L.) cell-suspension cultures”, Plant Physiology, 104, p.1301-1309.
KORTE F., KXESITADZE G., UGREKHELIDZE D., GORDE ZIANI M., KHATISSASHVILI G., BUADZE O., ZAALISHVILI G.& COULSTON F., 2000, “Organictoxicants and plants (review)”,
Ecotoxicology and Environmental Safety,47, p.1-26.
RZEPKA M.A.,CUNY D., BULTEAU G., LAKEL A., CAZIER F., VAN HALUWYN C., 2005, “Accumulation and effects of formaldehyde in plants perspective for an use for indoor air
treatment ?”in: Third international conference on plants and nvironmental pollution; Lucknow, Inde, 28/11/05 - 2/12/05.
SCHMITZ H., HILGERS U. & WEIDNER M., 200, “Assimilation and metabolism of formaldehyde by meaves appear unlikely to be a value for indoor air purification”, New Phytologist,147 (2), p.307-315.
UGREKHELIDZE D., KORTE F.& KVESITADZE G., 1997,
“Uptake and transformation of benzene and toluene by
plant leaves”, Ecotoxicology and Environmental Safety, 37, p.24-29.
WOLVERTON B., C. & WOLVERTON J., 1992, Interior
plants and their role in indoor air quality : an overview, Wolverton Environmental Services.
WOLVERTON B. C., MCDONALD R. C. & MESICK H. H.,
1985, “Foliage plants for indoor removal of the primary
combustion gases carbon monoxide and nitrogen dioxide”
Journal of the Mississipi Academy of Sciences, 30, 1-8


Herbs, Spices, Hoya and other plant collections are for sale on aleyagarden.com Plant care is available in various posts of this blog. Contact : aleyagarden@hotmail.com

How to assess easily the quality of a dried antibiotic plant in capsule

A natural antibiotic such as Andragrophis panicualta is characteristically bitter on the tip of the tongue. With a bit of experience it is easy to assess the quality of any dried plant in capsule : with your tongue ! This is a great advantage ( but not the only one ) over fake drugs that are not easily detectable.
http://www.aleyagarden.com/hbaandropani.html

Information released by investigators linked to INTERPOL suggests that fake drugs may be used in more places than we think, such as European hospitals. The same international police focuses on pharmaceutical crime in Asian countries. In 2013 Thai patients might be treated by up to 50% of fake medcine from all sources ( drug shops, pharmacies but also hospitals ). Some suggest that in 2013 n Russia the rate would be around 20 %. read more : http://www.interpol.int/Crime-areas/Pharmaceutical-crime/Pharmaceutical-crime

 

Herbs and Spices, Hoya, Hoya seeds, Orchid seeds, Ferns, Fern spores are for sale on aleyagarden.com Plant care is available in various posts of this blog. Contact : aleyagarden@hotmail.com

 

I have No time for Vegetables, but I discreetly sprinkle Moringa oleifera everywhere

MORINGA OLEIFERA dried leaves

A FULL SPECTRUM SUPER NUTRIENT-RICH RAW FOOD that Your kids will not notice in their favorite dishes with :
- proteins that can be rarely found in any other herbs and green leafy vegetables.
- minerals like calcium, iron, copper, manganese, zinc, selenium, and magnesium.
-  vital B-complex  such as vitamin-B6 (pyridoxine), thiamin (vitamin B-1), riboflavin, pantothenic acid, and niacin
- and other healthy things for their immune systems.

Dry moringa oleifera and broccoli : compare their mineral contents

How many capsules of moringa oleifera can I give to my 7 years old child ?

More on this miracle food from the tropics in Wikipedia

Are the expensive Moringa capsules cost effective against other vegetables in our diets ? " Use as much as you can to minimize your total cost " , the Solver says, Moringa oleifera is even more cost effective than tomatoes ! ... and we ...are just talking about basic nutrients.
There is no doubt that if we selected more subtle phytochemicals Moringa would always be on top of the combinations with the smallest possible cost !
http://aleyagarden-medicinal-plants.blogspot.com/2013/09/are-expensive-moringa-capsules-cost.html

Herbs and Spices, Hoya, Hoya seeds, Orchid seeds, Ferns, Fern spores are for sale on
www.aleyagarden.com Plant care is available in various posts of this blog. Contact :
aleyagarden@hotmail.com

Clitoria ternatea and Clinacanthus nutans extracts are more efficent than drugs against the virus Herpes simplex

" I have tried all available drugs against the activity of the virus herpes simplex on my face, nothing works. I haven't seen on the internet any recommendation for a particular medicine either. What can I do ? "
A harsh and risky method consists in drying the affected area with isopropanol on a piece of cotton. However as the interest for medicinal plants increases more people affected by herpes simplex apply the extract of a plant called Clitoria ternatea, which has antiviral properties with a broad spectrum,

Clitoria ternatea

or Clinacanthus nutans.
This information is not largely spread as the economic returns are low : you can grow the plant yourself and the quantity needed for treatment is a few droplets only. Usually the extract is in glycerin. At the start of the activity, apply two to three drops of the extract -  it is important that the application be done right at the beginning of the activity and that the quantity be no more than a few drops.

In animal tests the methanolic extract of Clitoria ternatea roots demonstrated nootropic, anxiolytic, antidepressant, anticonvulsant and antistress activity. Read more on :  http://en.wikipedia.org/wiki/Clitoria_ternatea
An other study has revealed that Clitoria ternatea and 10 more tropical plants have the most potent anti-viral extracts with broad spectrum activity among a selection of thirty plants.
http://www.researchgate.net/publication/233946926_Medicinal_plants_of_Tamil_Nadu_(Southern_India)_are_a_rich_source_of_antiviral_activities
Pharmaceutical Biology, 2009; 47(5): 422–429 RESEARCH ARTICLE Medicinal plants of Tamil Nadu (Southern India) are a rich source of antiviral activities S. Vimalanathan1, S. Ignacimuthu2, and J.B. Hudson1 1Department of Pathology & Laboratory Medicine, University of British Columbia, Vancouver, Canada, and 2Entomology Research Institute, Loyola College, Chennai, India
These plants are:  Gymnema sylvestre R. Br. (Asclepiadaceae), Pergularia daemia (Forsskal) Chiov. (Asclepiadaceae), Sphaeranthus indicus L. (Asteraceae), Cassia alata L. (Caesalpiniaceae), Evolvulus alsinoides L. (Convolvulaceae), Clitoria ternatea L. (Fabaceae), Indigofera tincto- ria L. (Euphorbiaceae), Abutilon indicum G. Don. (Malvaceae), Vitex trifolia L. (Verbenaceae), Clerodendrum inerme (L.) Gaertn (Verbenaceae), and Leucas aspera Spr. (Lamiaceae), which showed anti-MCV and anti- HSV activities at a concentration as low as 0.4 μg/mL.

In Southeast Asia the flowers of Clitoria ternatea are used to colour food. In Malay cooking, an aqueous extract is used to colour glutinous rice for kuih ketan (also known as pulut tai tai in Peranakan/Nyonya cooking) and in nonya chang. In Thailand, a syrupy blue drink is made called nam dok anchan (น้ำดอกอัญชัน), it is sometimes consumed with a drop of lime juice to increase acidity and turn the juice into pink-purple. In Burmese and Thai cuisine the flowers are also dipped in batter and fried.  Read more on :  http://en.wikipedia.org/wiki/Clitoria_ternatea

Herbs and Spices, Hoya, Hoya seeds, Orchid seeds, Ferns, Fern spores are for sale on
www.aleyagarden.com Plant care is available in various posts of this blog. Contact :
aleyagarden@hotmail.com

Salones de Te and Llajwa : spices in Bolivia

Read in Wikipedia : " Strangely, and very much like the British, Bolivians observe an afternoon tea break. Usually the tea breaks take place around 4 and 5 pm at salones de té' (tea rooms). These tea rooms often double as bakeries so that tea and pastries are enjoyed together. Cups of black tea are usually taken with biscuits such as Galletas Maria. Often, Bolivians drink yerba maté in place of the more common black tea."  http://en.wikipedia.org/wiki/Bolivian_cuisine

Do " salones de te "  and Llajwa (Spicy Bolivian Salsa) contribute to the low cancer rates of Bolivia ?
Read on : http://www.hispanic-culture-online.com/bolivian-food.html#ixzz2Y85cEpkV
Bolivian recipes include potatoes, which Bolivians love and serve several times per day.. Bolivians use spices like ajíes and peppers in large amounts. They also use the same cooking tools as other people when making foods like lechon, and tools for grinding and spreading the condiments and spices. Bolivia makes use of a multitude of spices in their cooking as they abundant in the country... "

More on the Llajwa , spicy Bolivian salsa http://boliviancookbook.wordpress.com/sauces/llajua-spicy-bolivian-salsa/

A Spiced Breakfast – The Flip Side of Quinoa
http://naturallygreencooking.com/2013/02/24/a-spiced-breakfast-the-fli-side-of-quinoa/

 

Herbs and Spices, Hoya, Hoya seeds, Orchid seeds, Ferns, Fern spores are for sale on aleyagarden.com Plant care is available in various posts of this blog. Contact : aleyagarden@hotmail.com

Wouldn't various teas be a better protection than the single Camellia sinensis

The UK has lower cancer rates than the rest of Europe. Is it related to the habit of drinking tea ? " .. when confounding factors like poor diet and smoking are avoided and animals are given nutritionally balanced food, cancer protection by tea clearly can be observed. " http://lpi.oregonstate.edu/sp-su99/tea.html But wouldn't various teas be a better protection than the single Camellia sinensis ?

My child has a sore throat and refuses to take syrups, what can I do ?

Acanthus abracteatus a plant found in the mangroves of south-east Asia and available at almost all herbal stores in the South East Asian region is one solution ( it is also available at www.aleyagarden.com  ) : dried and sold in capsules it is an efficient remedy, versatile, ready to use and cheap. At the onset of the inflammation a bit of a capsule poured in a sweet drink such as a favorite chocolate milk with honey and lemon juice is proven effective by countless uses. Some introduce also curcuma powder to the recipe to add many nutriments and a flavor.


 
 

Beyond its activity on sore throat Acanthus ebracteatus has been studied for its effects on tumor angiogenesis and on tumor growth in nude mice implanted with cervical cancer : read more on http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3437799/

 

Herbs and Spices, Hoya, Hoya seeds, Orchid seeds, Ferns, Fern spores are for sale on aleyagarden.com Plant care is available in various posts of this blog. Contact : aleyagarden@hotmail.com