EXHIBIT 31 (e)

CERTIFICATIONS

I, Elazar
Rabbani, Ph.D., certify that:

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|-- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|1. | I have
reviewed this Amendment No. 2 to the Annual Report on Form 10-K of Enzo
Biochem, Inc.                                                                                                                                                                                                              
|   |                                                                                                                                                                                                                                                                                                           
|2. | Based on my
knowledge, this report does not contain any untrue statement of a material
fact or omit to state a material fact necessary to make the statements made,
in light of the circumstances under which such statements were made, not
misleading with respect to the period covered by this report.
|   |                                                                                                                                                                                                                                                                                                           
|3. | [Intentionally
omitted]*                                                                                                                                                                                                                                                                                  
|   |                                                                                                                                                                                                                                                                                                           
|4. | [Intentionally
omitted]*                                                                                                                                                                                                                                                                                  
|   |                                                                                                                                                                                                                                                                                                           
|5. | [Intentionally
omitted]*                                                                                                                                                                                                                                                                                  

|                        |  |                                                                           |                   
|----------------------- |  | ------------------------------------------------------------------------- | ------------------
|Date:
December 11, 2009 |  |                                                                           |                   
|                        |  | By:                                                                       | /s/ Elazar
Rabbani
|                        |  |                                                                           |                   
|                        |  | Elazar
Rabbani, Ph.D.                                                    
|                        |  | Chairman of
the Board of
Directors, Secretary and Chief
Executive Officer

*Paragraphs 3
through 5 are included in Exhibit 31(a) to the Annual Report on Form 10-K for
the fiscal year ended July 31, 2009. Please see Note 16 to the exhibits.

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