Seems the methionine content in Moringa leaves is ~0.1% and the sulphur comes all from methionine. As far as Epstien s considered, probably it is linked to methionine only.

Dear

Moringa oleifera  is the most widely cultivated species of a monogeneric

family, the Moringaceae. Moringa oleifera leaves contain some amino acids which could have sulphide as cystein, Lysin... In the article entitled Moringa oleifera: A review on nutritive importance and its medicinal application. Gopalakrishnan et al have found 870mg/g of sulphur in leave powder of Moringa olifera . Please find the paper in this link: http://www.sciencedirect.com/science/article/pii/S2213453016300362?np=y

Some litterature papers could help:

-Moringa oleifera: A review on nutritive importance and its medicinal application .Food Science and Human Wellness. Lakshmipriya Gopalakrishnanb, Kruthi Doriyaa, Devarai Santhosh Kumara

-Teklit Gebregiorgis Amabye. Chemical Compositions and Nutritional Value of Moringa Oleifera Available in the Market of Mekelle. Journal of Food and Nutrition Sciences. Vol. 3, No. 5, 2015, pp. 187-190. doi: 10.11648/j.jfns.20150305.14

-Proximate Analysis and Chemical Composition of Raw and  Defatted Moringa oleifera Kernel  Peter Taiwo Olagbemide Philip, C. N. Alikwe.Advances in Life Science and Technology .Vol.24, 2014 

-The Nutrient Content of  Moringa oleifera Leaves Kathryn A. Witt PhD, RD, LDN

-Nutrient composition of Moringa oleifera leaves from two agro ecological zones in Ghana. Asante et al.2013

Hoping to be helpful

Marius

http://www.sciencedirect.com/science/article/pii/S2213453016300362

http://article.sciencepublishinggroup.com/html/10.11648.j.jfns.20150305.14.html

https://www.google.fr/url?sa=t&rct=j&q=&esrc=s&source=web&cd=4&cad=rja&uact=8&ved=0ahUKEwjSm5Hr7MHRAhUEOBQKHT92AmwQFgg2MAM&url=https%3A%2F%2Fwww.researchgate.net%2Ffile.PostFileLoader.html%3Fid%3D553baec7d2fd64a36d8b45bc%26assetKey%3DAS%253A273764653174794%25401442281987734&usg=AFQjCNF2BYoJ9vRm2Khk5cXWZGl7nXI_Ug&bvm=bv.144224172,d.d24

http://miracletrees.org/moringa-doc/nutrient-content-of-moringa-oleifera-leaves.pdf

http://www.sciencedirect.com/science/article/pii/S2213453016300362?np=y

thank you got answer but late by years