Project Detail

Project Number

NP30-2023

Project Leader

M. Jooste

Institution

Stellenbosch University

Team Members

M. Jooste

Student(s)

-

Date Started

October, 2023

Date Completed

February, 2024

Pitting in cherries: a literature review

Objectives and Rationale

Since an increase in surface pitting in cherries exported from South Africa was observed, the South African industry asked that a literature review be conducted to determine the cause(s) and possible solutions and recommendations to prevent and/ or reduce pitting incidence and severity.

Methods

A literature review was conducted on available publications of national and international studies on cherry pitting regarding their findings for the reason(s) for pitting as well as their recommendations to prevent and/ or reduce the defect.

Key Results

Surface pitting of sweet cherries happens due to both pre-and postharvest mechanical damage to the fruit. The defect manifests only after 7-10 d cold storage, subsequent to packing and inspection of the fruit for export. Several pre- and postharvest strategies to prevent or reduce surface pitting manifestation exist.

Key Conclusions of Discussion

Pre- and postharvest mechanical damage causes necrotic lesions in the fruit’s outer mesocarp that causes the epidermis and hypodermis to collapse into the void left by the damaged cells. Selecting naturally firm cultivars and strategies to maintain fruit firmness in the handling chain prevent and reduce pitting incidence and severity.

Take Home Message for Industry

Mechanical damage causes pitting in cherries. Careful handling of the fruit as well as good temperature management in the handling chain reduce the defect incidence and severity.

For Final Report, please contact:

anita@hortgro.co.za