Influence of extraction method on quality and functionality of broccoli juice

Area of Science:

• Food Science
• Nutritional Biochemistry
• Health Sciences

Background:

• Broccoli is rich in beneficial compounds.
• Extraction methods can impact juice quality and bioactivity.
• Understanding these differences is crucial for maximizing health benefits.

Purpose of the Study:

• To compare broccoli juice quality and functionality based on extraction method.
• To evaluate the impact of juicing techniques on bioactive compounds and health-related activities.

Main Methods:

• Broccoli juice extraction using three methods: silent juicer (Method I), centrifugal juicer (Method II), and mixer (Method III).
• Analysis of quality properties, including polyphenol and flavonoid content.
• In vitro investigation of antioxidative (DPPH, ABTS assays), anticancer, and anti-hyperglycemic (α-glucosidase inhibition) activities.

Main Results:

• Method I (silent juicer) yielded the highest polyphenol (1,226.24 mg/L) and flavonoid (1,018.32 mg/L) content.
• Broccoli juice from Method I exhibited superior DPPH and ABTS radical scavenging activities.
• Method I demonstrated the most significant growth inhibitory effects against tested cancer cell lines (HeLa, A549, AGS, HT-29).
• Highest α-glucosidase inhibitory effects were observed in broccoli juice prepared using Method I.

Conclusions:

• Juice extraction techniques significantly influence the chemical composition and functional properties of broccoli juice.
• Silent juicer extraction (Method I) is optimal for preserving bioactive compounds and enhancing the antioxidative, anticancer, and anti-hyperglycemic potential of broccoli juice.