Talk:Chlorophyll

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Contents 1 Introduction 2 Diagram 2.1 Additional images 3 Absorbance graph 4 Questions that could be addressed for this article 5 Healthy? 6 Chemical properties 7 Chlorophyll a spectra 7.1 Chlorophyll Spectra

[edit] Introduction

"more commonly known as boraphyll"

I'm no botanist, but I simply don't believe this. Google returns 258 hits for boraphyll, 5820000 for chlorophyll.

Please will someone knowledgeable review this and correct it?

Thanks.

132.244.246.25 11:18, 18 December 2006 (UTC)

haha, that's vandalism. it's a joke from the movie Billie Madison in which Adam Sandler interrupts a high-school science class by saying "Chlorophyll? more like bore-ophyll!"

[edit] Diagram

This diagram isn't right - the phytyl chain doesn't have enough carbon atoms. Less importantly, it would be nice if it showed all the different varieties of chlorophyll. I don't really have the tools to correct it at the moment, plus I don't know what font is being used. See [1], [2]. Josh

Okay, there's an updated a & b. Yes, at least a c might be nice to have too, to illustrate one without the tail, will look into it. It would probably be overkill to show variations like bacteriochloropyll, though. iMeowbot~Mw 16:38, 13 Feb 2005 (UTC)

All right, it's got d in there too, on to the c's! iMeowbot~Mw 20:35, 13 Feb 2005 (UTC)

Okay then! there's c1 and c2. If someone could do a sanity check, that would rule. The numbers and bonds appear okay from here, but hey, things happen. iMeowbot~Mw 22:14, 13 Feb 2005 (UTC)

Those look really nice. I've added them to the page. Bacteriochlorophylls would, of course, go on the bacteriochlorophyll page, but that's less important. Josh

Didn't even think to look for a separate article, duh, thanks --iMeowbot~Mw 12:15, 18 Feb 2005 (UTC)

Don't some of the "varieites" need an extra carbon atom? ie. the pink box, should be a methyl gropu for a,d but the bonds should look like a + as opposed to a T .. 203.218.141.233 13:55, 1 March 2006 (UTC)

[edit] Additional images

I'm not sure what you are looking for. There are images of structure diagrams for several chlorophylls at the PubChem website. [3]

The absorbance graph is wrong. The Chl a spectrum is correct but the Chl b spectrum marked in red is not correct. The absorption peak for Chl b is at 647 nm! The spectrum shown in red is for a Chl c compound, either Chl c1, Chl c2, a mixture of the two Chl c1c2 or Mg-DVP (a Chl c found in some organisms) which all peak at 630 nm.

[edit] Absorbance graph

The plots look sane, but they're unreferenced so I intend to redo with a documented set of published numbers. I have numbers for a and b; does anyone know of nice clean series for the c or d floating around on the net? iMeowbot~Mw 23:42, 13 Feb 2005 (UTC)

[edit] Questions that could be addressed for this article

I have several questions that perhaps someone could address in this article. What is the importance of the Mg in chlorophyll? What does it enable and how is this important to the plant? What makes a particular pigment efficient at absorbing a certain wavelength, what property distinguishes it from the other pigments?

Can someone also address the health benefits of chlorophyll and it's similarity to human red blood cell? we contain iron where chlorophyll contains magnesium. —The preceding unsigned comment was added by 69.155.183.69 (talk • contribs) .

Do you mean it similarity to porphyrin in hemoglobin? These are good questions. David D. (Talk) 08:28, 5 January 2006 (UTC)

Is there some reason why the green part of the visible spectrum is not absorbed by chlorophyll and associated pigments? Why is chlorophyll able to absorb only red and blue light? Would a more efficient system absorb all visible light?

Where can I find the answers to these questions?

I placed you questions on the science ref desk. You can find any replies to your questions here Wikipedia:Reference_desk/Science#Chlorophyll_efficiency. David D. (Talk) 16:14, 1 February 2007 (UTC)

I've got another question, or suggestion: who discovered chlorophyll was necessary for photosynthesis? I've heard it was Rene Dutrochet, but I can't source it. Can somebody confirm & include? Trekphiler 23:06, 3 February 2007 (UTC)

[edit] Healthy?

Is chlorophyll healthy to humans, particularly when ingested? JIP | Talk 17:59, 12 March 2006 (UTC)

[edit] Chemical properties

Hi, could an article with the chemical properties of chlorophyll be created? Like how there is Vitamin C and Ascorbic acid as well as Water and Water (molecule). I came here to find out the temperature chlorophyll decomposes at (if its the same as proteins), and any other reasons why it goes brown. thoughts? mastodon 17:05, 23 May 2006 (UTC)

[edit] Chlorophyll a spectra

The Chlorophyll a absorption maximum at 680 nm looks a little bit tight, i think. The Soret bands look ok. As there is an unequally spaced division of the x coordinate, could it be, the somehow log scale and linear scale got mixed up?

Stefan

[edit] Chlorophyll Spectra

The chlorophyll b spectrum is still wrong. Chl b has a red absorption peak at about 645 - 652 nm depending on the solvent. The spectrum marked Chl b is more likely to be chlorophyll c1 or c2. Please fix it.

Ray Ritchie —The preceding unsigned comment was added by Raymond J. RITCHIE (talk • contribs) 08:26, 5 January 2007 (UTC).