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For analyte detection in raw fruits, the conventional sample pretreatment method usually involves mashing (blending or homogenization), extraction, and dilution. This process is time-consuming, solvent-intensive and laborious. Usually, there is also a lot wastage with multiple fruits being combined into composite samples. In this work, a new micro-sampling approach based on a syringe needle is developed;...
A novel syringe needle-based sampling approach coupled with liquid-phase extraction (NBS−LPE) was developed and applied to the extraction of l-ascorbic acid (AsA) in apple. In NBS−LPE, only a small amount of apple flesh (ca. 10mg) was sampled directly using a syringe needle and placed in a glass insert for liquid extraction of AsA by 80μL oxalic acid–acetic acid. The extract was then directly analyzed...
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