No commissioner of the Liquor Control Commission and no employee of the Department of Consumer Protection who carries out the duties and responsibilities of sections 30-2 to 30-68m, inclusive, and the regulations enacted thereunder may, directly or indirectly, individually or as a member of a partnership or as a shareholder of a corporation, have any interest whatsoever in dealing in or in the manufacture of alcoholic liquor, nor receive any commission or profit whatsoever from nor have any interest whatsoever in the purchases or sales made by the persons authorized by this chapter to purchase or sell alcoholic liquor. No provision of this section shall prevent any such commissioner or employee from purchasing and keeping in his possession, for the personal use of himself or members of his family or guests, any alcoholic liquor which may be purchased or kept by any person by virtue of this chapter.