In addition to investments in any property, as such word is defined in Code Section 53-12-50, the trustee or trustees of a trust created under Code Section 53-12-51 may invest any funds of the trust estate in investments authorized to be made by trustees under the laws of this state; provided, however, that the deed creating the estate may further limit or expand the powers and authority of the trustee or trustees with respect to investments, including the power to invest in property located outside this state. The trustee or trustees are authorized and empowered, in accordance with the terms of the deed creating the estate, from corpus or from income or from both, to repurchase or redeem any issued and outstanding certificates of beneficial interest.