ICAR AIEEA PGFood Science Technology 09 July 2023 (Shift 1) Paper

Flour requirements for biscuit production:

• Soft wheat flour contains low protein content ($8\text{--}10\%$) and weak, extensible gluten with minimal elastic recoil. This promotes optimal dough spread, avoids shrinkage, and produces a tender, crisp biscuit crumb.
• Hard wheat flour contains high, strong gluten ($11\text{--}14\%$ protein) essential for yeast-leavened bread, but produces tough, shrunk biscuits.
• Durum wheat produces coarse semolina with high tenacity suited for extruded pasta.
• Buckwheat is a non-cereal pseudocereal lacking gluten.

Historical origin of noodles:

• Taiwan developed regional noodle variations much later.
• Korea adapted noodle-making traditions influenced by Chinese culture.
• Japan was introduced to ramen and noodles through Chinese culinary trade routes.
• The earliest archaeological evidence of noodles (approximately 4,000 years old, made from broomcorn and foxtail millet) was discovered at the Lajia site in Qinghai, confirming that noodles originated in ancient China.

Functional roles of shortenings in breadmaking:

• Commercial shortenings are formulated as refined, deodorized, 100% fats that are bland and odorless, ensuring they do not impart unwanted odors or flavors to baked bread.
• Shortenings trap micro-air bubbles during mixing and creaming, aiding dough aeration.
• Shortenings lubricate and coat gluten strands, preventing excessive cross-linking and yielding a soft, tender crumb.
• Shortenings improve gluten film extensibility, enhancing gas retention and dough handling strength.