Exhibit 3.1

AMENDED AND RESTATED

CERTIFICATE OF INCORPORATION

OF

ECO PLANET CORP.

Pursuant to Section 242 and Section 245 of the General Corporation Law of the State of Delaware, Eco Planet Corp. has adopted this Amended and Restated Certificate of Incorporation amending and restating its Certificate of Incorporation (originally filed September 14, 2011), which Amended and Restated Certificate of Incorporation has been duly proposed by the directors and adopted by the stockholders of this corporation (by written consent pursuant to Section 228 of said General Corporation Law) in accordance with the provisions of said Section 242 and Section 245.

I.

The name of this corporation is Zosano, Inc.

II.

The address of the registered office of the corporation in the State of Delaware is 1811 Silverside Road, Wilmington, County of New Castle, Delaware 19810, and the name of the registered agent of the corporation in the State of Delaware at such address is Vcorp Services, LLC.

III.

The purpose of this corporation is to engage in any lawful act or activity for which a corporation may be organized under the Delaware General Corporation Law (“DGCL”).

IV.

A. This corporation is authorized to issue two classes of stock to be designated, respectively, “Common Stock” and “Preferred Stock.” The total number of shares which the corporation is authorized to issue is two hundred million (200,000,000) shares. One hundred ninety five million (195,000,000) shares shall be Common Stock, each having a par value of one-hundreth of one cent ($0.0001) (“Common Stock”). Five million (5,000,000) shares shall be Preferred Stock, each having a par value of one-hundreth of one cent ($0.0001) (“Preferred Stock”).

At the time this Amended and Restated Certificate of Incorporation becomes effective (the “Effective Time”), the outstanding shares of the corporation’s capital stock shall be combined such that each two hundred (200) shares of common stock, $0.0001 par value per share, of the corporation outstanding at the Effective Time (“Old Common Stock”) shall automatically be changed into one (1) fully paid and nonassessable share of Common Stock without any action on the part of the holder thereof (the “Reverse Stock Split”). All shares of Common Stock issued to any holder of Old Common Stock as a result of the Reverse Stock Split shall be aggregated for the purpose of determining the number of shares of Common Stock to which such holder shall be entitled, and any fractional share that any stockholder would

otherwise be entitled to receive in connection with the Reverse Stock Split following such aggregation shall be rounded up to the nearest whole share. At and after the Effective Time, each outstanding certificate that prior thereto represented shares of Old Common Stock shall be deemed for all purposes to evidence ownership of and to represent that whole number of shares of Common Stock into which the shares represented by such certificate shall have been combined, reclassified and changed as herein provided. Until any such outstanding stock certificate shall have been surrendered for transfer or otherwise accounted for to the corporation, the registered owner thereof on the books and records of the corporation shall have and be entitled to exercise any voting and other rights with respect to, and to receive any dividend and other distributions upon, the shares of Common Stock issuable to the holder thereof upon surrender of such certificate.

B. The Preferred Stock may be issued from time to time in one or more series. The Board of Directors is hereby expressly authorized to provide for the issue of all or any of the shares of the Preferred Stock in one or more series, and to fix the number of shares and to determine or alter for each such series, such voting powers, if any, and such designation, preferences, and relative, participating, optional, or other rights and such qualifications, limitations, or restrictions thereof, as shall be stated and expressed in the resolution or resolutions adopted by the Board of Directors providing for the issuance of such shares and as may be permitted by the DGCL. The Board of Directors is also expressly authorized to increase or decrease the number of shares of any series subsequent to the issuance of shares of that series, but not below the number of shares of such series then outstanding. In case the number of shares of any series shall be decreased in accordance with the foregoing sentence, the shares constituting such decrease shall resume the status that they had prior to the adoption of the resolution originally fixing the number of shares of such series.

C. Each outstanding share of Common Stock shall entitle the holder thereof to one vote on each matter properly submitted to the stockholders of the corporation for their vote; provided, however, that, except as otherwise required by law, holders of Common Stock shall not be entitled to vote on any amendment to this Amended and Restated Certificate of Incorporation (including any certificate of designation filed with respect to any series of Preferred Stock) that relates solely to the terms of one or more outstanding series of Preferred Stock if the holders of such affected series are entitled, either separately or together as a class with the holders of one or more other such series, to vote thereon by law or pursuant to this Amended and Restated Certificate of Incorporation (including any certificate of designation filed with respect to any series of Preferred Stock).

V.

For the management of the business and for the conduct of the affairs of the corporation, and in further definition, limitation and regulation of the powers of the corporation, of its directors and of its stockholders or any class thereof, as the case may be, it is further provided that:

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A. BOARD OF DIRECTORS

1. The management of the business and the conduct of the affairs of the corporation shall be vested in its Board of Directors. The number of directors constituting the Board of Directors shall be fixed from time to time, exclusively by resolutions adopted by a majority of the authorized number of directors constituting the Board of Directors.

2. Subject to the rights of the holders of any series of Preferred Stock to elect additional directors under specified circumstances, the directors shall be divided into three classes designated as Class I, Class II and Class III, respectively. The Board of Directors is authorized to assign members of the Board of Directors already in office to such classes at the time the classification becomes effective. At the first annual meeting of stockholders following the initial classification of the Board of Directors, the term of office of the Class I directors shall expire and Class I directors shall be elected for a full term of three years. At the second annual meeting of stockholders following such initial classification, the term of office of the Class II directors shall expire and Class II directors shall be elected for a full term of three years. At the third annual meeting of stockholders following such initial classification, the term of office of the Class III directors shall expire and Class III directors shall be elected for a full term of three years. At each succeeding annual meeting of stockholders, directors shall be elected for a full term of three years to succeed the directors of the class whose terms expire at such annual meeting.

Notwithstanding the foregoing provisions of this section, each director shall hold office until such director’s successor is duly elected and qualified or until such director’s earlier death, resignation or removal. No decrease in the number of directors constituting the Board of Directors shall shorten the term of any incumbent director.

3. REMOVAL OF DIRECTORS; VACANCIES

a. Subject to the rights of any series of Preferred Stock to elect additional directors under specified circumstances, neither the Board of Directors nor any individual director may be removed without cause.

b. Subject to any limitation imposed by law, any individual director or directors may be removed with cause by the affirmative vote of the holders of at least sixty-six and two-thirds percent (66  ²⁄₃%) of the voting power of all then-outstanding shares of capital stock of the corporation entitled to vote generally in the election of directors.

4. Subject to the rights of the holders of any series of Preferred Stock, any vacancies on the Board of Directors resulting from death, resignation, disqualification, removal or other causes and any newly created directorships resulting from any increase in the number of directors, shall, except as otherwise provided by law, be filled only by the affirmative vote of a majority of the directors then in office, even though less than a quorum of the Board of Directors, and not by the stockholders, unless the Board of Directors determines by resolution that any such vacancies or newly created directorships shall be filled by the stockholders. Any director elected in accordance with the preceding sentence shall hold office for the remainder of the full term of the director for which the vacancy was created or occurred and until such director’s successor shall have been elected and qualified.

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B.

1. The Board of Directors is expressly empowered to adopt, amend or repeal the Bylaws of the corporation. Any adoption, amendment or repeal of the Bylaws of the corporation by the Board of Directors shall require the approval of a majority of the authorized number of directors. The stockholders shall also have power to adopt, amend or repeal the Bylaws of the corporation; provided that, in addition to any vote of the holders of any class or series of stock of the corporation required by law or by this Amended and Restated Certificate of Incorporation, such action by stockholders shall require the affirmative vote of the holders of at least sixty-six and two-thirds percent (66  ²⁄₃%) of the voting power of all of the then-outstanding shares of the capital stock of the corporation entitled to vote generally in the election of directors, voting together as a single class.

2. The directors of the corporation need not be elected by written ballot unless the Bylaws so provide.

3. No action shall be taken by the stockholders of the corporation except at an annual or special meeting of stockholders called in accordance with the Bylaws, and no action shall be taken by the stockholders by written consent or electronic transmission.

4. Advance notice of stockholder nominations for the election of directors and of business to be brought by stockholders before any meeting of the stockholders of the corporation shall be given in the manner provided in the Bylaws of the corporation.

VI.

A. The liability of the directors for monetary damages shall be eliminated to the fullest extent under applicable law. If the DGCL is amended to authorize corporate action further eliminating or limiting the personal liability of directors, then the liability of a director of the corporation shall be eliminated to the fullest extent permitted by the DGCL, as so amended.

B. Any repeal or modification of this Article VI shall be prospective and shall not affect the rights under this Article VI in effect at the time of the alleged occurrence of any act or omission to act giving rise to liability or indemnification.

VII.

A. The corporation reserves the right to amend, alter, change or repeal any provision contained in this Amended and Restated Certificate of Incorporation, in the manner now or hereafter prescribed by statute, except as provided in paragraph C of this Article VII, and all rights conferred upon the stockholders herein are granted subject to this reservation.

B. Unless the corporation consents in writing to the selection of an alternative forum, the Court of Chancery of the State of Delaware shall be the sole and exclusive forum for (i) any derivative action or proceeding brought on behalf of the corporation, (ii) any action asserting a claim for breach of a fiduciary duty owed by any director, officer, employee or agent of the corporation to the corporation or the corporation’s stockholders, (iii) any action asserting a claim arising pursuant to any provision of the DGCL, this Certificate of Incorporation or the Bylaws of

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the corporation or (iv) any action asserting a claim governed by the internal affairs doctrine, in each case subject to said Court of Chancery having personal jurisdiction over the indispensable parties named as defendants therein.

C. Notwithstanding any other provisions of this Amended and Restated Certificate of Incorporation or any provision of law that might otherwise permit a lesser vote or no vote, but in addition to any affirmative vote of the holders of any particular class or series of the corporation required by law or by this Amended and Restated Certificate of Incorporation or any certificate of designation filed with respect to a series of Preferred Stock, the affirmative vote of the holders of at least sixty-six and two-thirds percent (66  ²⁄₃%) of the voting power of all of the then-outstanding shares of capital stock of the corporation entitled to vote generally in the election of directors, voting together as a single class, shall be required to alter, amend or repeal Articles V, VI and VII.

VIII.

This Amended and Restated Certificate of Incorporation shall be effective on October 2, 2013 at 10:00 a.m. EDT.

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IN WITNESS WHEREOF, this Amended and Restated Certificate of Incorporation has been executed by a duly authorized officer of this corporation on this 17th day of September, 2013.