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Aloe barbadensis Miller!
(Aloe vera) !
Célia Stutz, Florent Waltz, Mickaël Veinante!
Master biologie et valorisation des plantes!
!
healing
stimulation
Sugar composition of !
Aloe vera pulp
Major metabolites!
in Aloe vera
II. Gel composition
III. Examples of both positive and negative effects of Aloe vera gel
IV. Criticisms & Conclusion
carcinogenic
activity
I. Introduction
Introduction
Aloe barbadensis Miller
(Aloe vera)
Liliaceae
family
CAM
metabolism
Found near
tropics
Used as a medicinal
plant since antiquity
Does Aloe vera really have
those effects ?
Overview
Gel composition
(Ni and al, 2004)
The sugar composition of Aloe vera pulp
Mannose
Major metabolites
Aloin A !
or B
Aloesin !
& Aloeresin A
(Lee and al, 2012)
2 examples !
a positive effect & a negative effect
A positive effect example : healing stimulation
(Choi and al, 2001)
A negative effect example : Carcinogenic activity
(Boudreau and al, 2012)
mademoiselle-bio.com
A potential toxical compound
➙ Aloin
Many researches focus
on molecules alone, but
association of molecules
are often responsible of
the effects
Economical interest of Aloe vera!
➙ issue of impartiality!
➙ lack of control
Many described properties in articles !
! ➙ sometimes without interest
Other Aloes have the
same compounds
Uses in a lot of areas
Criticisms
Conclusion
Aloe vera has widely been used for a long time!
Researches :!
➙ Understanding of some properties!
➙ Nevertheless, some researches lack of objectivity
because of the desire to get a « miracle plant »!
Aloe vera is interesting but we need to step
back about the properties which are attributed
to this plant.!
Knock out an enzyme of the aloin biosynthetic
pathway
Image : aloe-vera-noni.com
References
!
• Y. Ni, D. Turner, K.M. Yates, I. Tizard, 2004, Review : Isolation and characterization of structural components of Aloe
vera L. leaf pulp, Elsevier, International Immunopharmacology 4 1745–1755!
• S.W. Choi, B.W. Son, Y.S. Son, Y.I. Park, S.K. Lee, M.H. Chung, 2001, The wound-healing effect of a glycoprotein
fraction isolated from Aloe vera, British Journal of Dermatology 145 535-545.!
• M.D. Boudreau, P.W. Mellick, G.R. Olson, R.P. Felton, B.T. Thorn, F.A. Beland, 2012, Clear Evidence of Carcinogenic
Activity by a Whole-Leaf Extract of Aloe barbadensis Miller (Aloe vera) in F344/N Rats, toxicological sciences 131(1)
26–39!
• D. Paladines, D. Valero, J. M. Valverde, H. D-M, M. Serrano, D. Martínez-Romero, 2014, The addition of rosehip oil
improves the beneficial effect of Aloe vera gel on delaying ripening and maintaining postharvest quality of several
stonefruit, Elsevier, postharvest biology and technology 92 23–28!
• T. Reynolds, A.C. Dweck, 1999, Aloe vera leaf gel: a review update, Elsevier, Journal of Ethnopharmacology 68 3–37!
• Mary D. Boudreau and Frederick A. Beland, 2006, An evaluation of the biological and toxicological properties of Aloe barbadensis
(Miller), Aloe vera, Journal of environmental science and health part C, 24 103–154!
• J.H. Hamman, 2008, Review : Composition and applications of Aloe vera leaf gel, Molecules 13 1599-1616!
• S. Lee, S. G. Do, S. Yeou Kim, J. Kim, Y. Jin, C. H. Lee, 2012, Mass Spectrometry-Based Metabolite Profiling and Antioxidant
Activity of Aloe vera (Aloe barbadensis Miller) in Different Growth Stages, Journal of agricultural and food chemistry, 60
11222−11228!
• V.K. Chandegara, A.K. Varshney, 2013, Aloe vera L. processing and products : a review, Int. J. Med. Arom. Plants, Vol 3, 4
492-506!
• B.D. Luccia, N. Manzo, M. Vivo, E. Galano, A. Amoresano, E. Crescenzi, A. Pollice, R. Tudisco, F. Infascelli and V. Calabrò, 2013, A
Biochemical and Cellular Approach to Explore the Antiproliferative and Prodifferentiative Activity of Aloe Arborescens Leaf Extract,
Phytotherapy research, 27 1819–1828!
!
Thanks for your attention
G1G1M1DI2 composition

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Aloe barbadensis Miller (Aloe vera)

  • 1. Aloe barbadensis Miller! (Aloe vera) ! Célia Stutz, Florent Waltz, Mickaël Veinante! Master biologie et valorisation des plantes! !
  • 2. healing stimulation Sugar composition of ! Aloe vera pulp Major metabolites! in Aloe vera II. Gel composition III. Examples of both positive and negative effects of Aloe vera gel IV. Criticisms & Conclusion carcinogenic activity I. Introduction
  • 3. Introduction Aloe barbadensis Miller (Aloe vera) Liliaceae family CAM metabolism Found near tropics Used as a medicinal plant since antiquity
  • 4. Does Aloe vera really have those effects ?
  • 7. (Ni and al, 2004) The sugar composition of Aloe vera pulp Mannose
  • 8. Major metabolites Aloin A ! or B Aloesin ! & Aloeresin A (Lee and al, 2012)
  • 9. 2 examples ! a positive effect & a negative effect
  • 10. A positive effect example : healing stimulation (Choi and al, 2001)
  • 11. A negative effect example : Carcinogenic activity (Boudreau and al, 2012)
  • 12. mademoiselle-bio.com A potential toxical compound ➙ Aloin Many researches focus on molecules alone, but association of molecules are often responsible of the effects Economical interest of Aloe vera! ➙ issue of impartiality! ➙ lack of control Many described properties in articles ! ! ➙ sometimes without interest Other Aloes have the same compounds Uses in a lot of areas Criticisms
  • 13. Conclusion Aloe vera has widely been used for a long time! Researches :! ➙ Understanding of some properties! ➙ Nevertheless, some researches lack of objectivity because of the desire to get a « miracle plant »! Aloe vera is interesting but we need to step back about the properties which are attributed to this plant.! Knock out an enzyme of the aloin biosynthetic pathway Image : aloe-vera-noni.com
  • 14. References ! • Y. Ni, D. Turner, K.M. Yates, I. Tizard, 2004, Review : Isolation and characterization of structural components of Aloe vera L. leaf pulp, Elsevier, International Immunopharmacology 4 1745–1755! • S.W. Choi, B.W. Son, Y.S. Son, Y.I. Park, S.K. Lee, M.H. Chung, 2001, The wound-healing effect of a glycoprotein fraction isolated from Aloe vera, British Journal of Dermatology 145 535-545.! • M.D. Boudreau, P.W. Mellick, G.R. Olson, R.P. Felton, B.T. Thorn, F.A. Beland, 2012, Clear Evidence of Carcinogenic Activity by a Whole-Leaf Extract of Aloe barbadensis Miller (Aloe vera) in F344/N Rats, toxicological sciences 131(1) 26–39! • D. Paladines, D. Valero, J. M. Valverde, H. D-M, M. Serrano, D. Martínez-Romero, 2014, The addition of rosehip oil improves the beneficial effect of Aloe vera gel on delaying ripening and maintaining postharvest quality of several stonefruit, Elsevier, postharvest biology and technology 92 23–28! • T. Reynolds, A.C. Dweck, 1999, Aloe vera leaf gel: a review update, Elsevier, Journal of Ethnopharmacology 68 3–37! • Mary D. Boudreau and Frederick A. Beland, 2006, An evaluation of the biological and toxicological properties of Aloe barbadensis (Miller), Aloe vera, Journal of environmental science and health part C, 24 103–154! • J.H. Hamman, 2008, Review : Composition and applications of Aloe vera leaf gel, Molecules 13 1599-1616! • S. Lee, S. G. Do, S. Yeou Kim, J. Kim, Y. Jin, C. H. Lee, 2012, Mass Spectrometry-Based Metabolite Profiling and Antioxidant Activity of Aloe vera (Aloe barbadensis Miller) in Different Growth Stages, Journal of agricultural and food chemistry, 60 11222−11228! • V.K. Chandegara, A.K. Varshney, 2013, Aloe vera L. processing and products : a review, Int. J. Med. Arom. Plants, Vol 3, 4 492-506! • B.D. Luccia, N. Manzo, M. Vivo, E. Galano, A. Amoresano, E. Crescenzi, A. Pollice, R. Tudisco, F. Infascelli and V. Calabrò, 2013, A Biochemical and Cellular Approach to Explore the Antiproliferative and Prodifferentiative Activity of Aloe Arborescens Leaf Extract, Phytotherapy research, 27 1819–1828! !
  • 15. Thanks for your attention