Step 1: Understanding the Concept:
Mycotoxins are toxic secondary metabolites produced by certain molds that can contaminate agricultural commodities, particularly fruits and grains, during pre-harvest and post-harvest stages.
Food safety authorities establish strict maximum residue limits (MRLs) for these toxins in foods to safeguard public health.
Step 2: Detailed Explanation:
Patulin is a mycotoxin produced by various species of molds, primarily belonging to the genera Penicillium, Aspergillus, and Byssochlamys.
It is highly associated with blue mold rot of apples, which is caused by Penicillium expansum.
When damaged or moldy apples are processed into apple juice, patulin can contaminate the juice product.
Because patulin is stable during pasteurization and possesses mutagenic, immunotoxic, and gastrointestinal toxicity, regulatory bodies worldwide have established strict standards:
1. The World Health Organization (WHO), the Codex Alimentarius Commission, the USFDA, and the Food Safety and Standards Authority of India (FSSAI) have harmonized the maximum permissible limit for patulin in apple juice and apple juice-containing beverages to \(50\text{ }\mu\text{g/kg}\) (which is equivalent to \(50\text{ ppb}\) or \(0.05\text{ mg/kg}\)).
Any concentration exceeding this threshold requires the product to be rejected from the commercial market.
Step 3: Final Answer:
Therefore, patulin contamination in Apple juice shall not exceed \(50\text{ }\mu\text{g/kg}\).