Enzymatic browning and polyphenol oxidase control strategies

Area of Science:

• Food Science
• Biochemistry
• Horticulture

Background:

• Enzymatic browning significantly reduces the shelf-life and economic value of fresh and fresh-cut fruits and vegetables.
• Polyphenol oxidase (PPO) is the primary enzyme responsible for the undesirable browning reactions in produce.

Purpose of the Study:

• To provide a comprehensive review of current and emerging technologies for controlling enzymatic browning in horticultural produce.
• To identify limitations of existing methods and propose novel strategies for improved browning inhibition with minimal side effects.

Main Methods:

• Review of scientific literature on browning control technologies.
• Categorization of methods into physical, chemical (natural inhibitors), molecular biotechnology, and nanotechnology approaches.
• Analysis of the efficacy and limitations of each method.

Main Results:

• Various physical, chemical, biotechnological, and nanotechnological methods exist to inhibit PPO activity and subsequent browning.
• Current methods often lack widespread industrial and consumer acceptance due to side effects or limited efficacy.
• Emerging strategies show promise for more effective and safer browning control.

Conclusions:

• Effective inhibition of enzymatic browning remains a challenge for the horticultural industry.
• Further research into novel inhibitors, substrate regulation techniques, and integrated approaches is crucial.
• Developing consumer- and industry-accepted browning control methods will reduce food waste and enhance produce quality.