However, there are various tips floating around the Internet that indicate warming lemons for 15 to 20 seconds in the microwave before juicing will produce more juice. Warming the fruit works to soften the chilled, firm membranes, allowing the juice to flow more freely.

Is it safe to microwave lemons?

The simplest way to get more juice out of the lemon is to just heat it in the microwave for about 10 to 20 seconds. Do not cut the lemon in halves as the heat will soak up the moisture of the lemon. Instead, just put a whole lemon so that the absorption of juice is well prevented.

Is it bad to heat lemon?

However, heat increases the rate of oxidation, the rationale here is as you heat the lemon juice the molecules will start to move faster thus increasing the rate of oxidation. So in short: When you boil lemon juice, the molecules in the lemon juice will oxidize faster.