🍲 Good Manufacturing Practices and GHP

This lesson builds core elective concepts in BSc Agriculture with practical applications and exam-oriented clarity.

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Good Manufacturing Practices and GHP

Good Manufacturing Practices (GMP) and Good Hygiene Practices (GHP) form the foundational prerequisites upon which advanced food safety systems such as HACCP are built. They provide the basic environmental and operating conditions necessary to produce safe food and are mandated by regulatory authorities worldwide, including FSSAI in India.

Facility Design and Layout

A food processing facility must be designed to facilitate a unidirectional flow of materials from raw to finished product, minimizing the risk of cross-contamination. Floors should be smooth, non-absorbent, and easy to clean. Walls and ceilings must be constructed of materials that resist moisture and do not harbour microorganisms. Adequate lighting (at least 540 lux in inspection areas) and ventilation systems with appropriate air filtration prevent condensation and airborne contamination.

Personal Hygiene

Personnel handling food are a significant potential source of contamination. GHP requires that all food handlers wash hands thoroughly before work, after using toilets, and after handling raw materials. Clean protective clothing, hair nets, and gloves must be worn. Workers with open wounds, infections, or communicable diseases must be excluded from food handling areas. Regular training on hygiene practices is essential.

Sanitation and Cleaning

Sanitation programs must specify cleaning frequencies, agents, concentrations, contact times, and responsible personnel for all food contact surfaces, equipment, and facility areas. Cleaning-in-Place (CIP) systems are commonly used for pipelines and closed equipment. Environmental monitoring for indicator organisms such as Listeria spp. validates the effectiveness of sanitation protocols.

Pest Control

An integrated pest management program prevents entry, harbourage, and infestation by rodents, insects, and birds. Measures include sealing gaps, installing air curtains and insect traps, proper waste management, and periodic inspections by licensed pest control operators. Chemical treatments must be applied so they do not contaminate food or food contact surfaces.

Water and Waste Management

Water used in food processing must meet potable standards and be regularly tested for microbial and chemical quality. Waste water and solid waste must be handled to prevent contamination of production areas and the surrounding environment.

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Summary Cheat Sheet

Topic	Key takeaway
Main focus	Good Manufacturing Practices and GHP.
Section context	Revise this lesson with the rest of Food Safety and Standards for stronger conceptual continuity.