How to remove the black on the peach pit

The black stains on peach pits can be removed by soaking and scrubbing, wiping with white vinegar, cleaning with baking soda, and other methods. The blackening of the surface of peach pits may be caused by oxidation residues, mold growth, or pectin deposition. It is recommended to choose an appropriate treatment method based on the type of stain.

1. Soak and Brush

Soak the peach pits in warm water for half an hour to soften the surface dirt, then gently brush the gaps with a soft bristled toothbrush. The melanin formed by oxidation often adheres to the textured depressions, and prolonging the soaking time appropriately can help decompose pectin. Avoid using metal brushes during processing to prevent scratching the natural texture of the peach pits.

2. Wipe with white vinegar

Dip a cotton swab in diluted white vinegar and repeatedly wipe along the peach kernel pattern. Acetic acid can dissolve alkaline stains and some fungal metabolites. For black spots caused by mold, you can first wet apply vinegar before rinsing. After operation, it is necessary to thoroughly rinse with clean water to prevent residual acidic substances from accelerating the cracking of peach pits.

3. Baking soda cleaning

Mix baking soda with water to form a paste and apply it to the blackened area. After letting it sit, gently scrub it. A weakly alkaline environment can neutralize the oxidation products of tannins in fruit kernels, and has a significant effect on stubborn fruit stains. This method is particularly suitable for handling dark deposits caused by long-term storage, and should be wiped dry promptly after cleaning to prevent moisture.

4. Salt Friction

Coarse salt particles and peach pits are placed in gauze and rubbed, using crystal edges to physically remove surface attachments. This method is suitable for shallow stains that have not penetrated deeply into the texture, and the friction process can synchronously polish the surface. Pay attention to controlling the strength to avoid damaging the peach kernel patina. After completion, use olive oil to cure and prevent cracking.

5. Sun drying

Wash the peach pits and place them in a ventilated area to dry naturally in the shade. Ultraviolet radiation can inhibit mold regeneration. For mild mold stains, moderate sun exposure can lighten pigment precipitation. To avoid cracking caused by exposure to sunlight, applying beeswax after drying can form a protective layer and reduce the probability of subsequent oxidation and blackening.

It is recommended to regularly wipe and maintain the processed peach pits with a soft cloth, and keep the storage environment dry. If the black substance penetrates into the interior or is accompanied by an odor, it may have undergone deep mold growth and should not be continued to be played with. Wash hands promptly after daily contact with peach pits to avoid skin irritation from residue. For peach pits used for cultural purposes, the properties of the black substance can be confirmed with a magnifying glass before cleaning. The naturally formed dark texture does not need to be forcibly removed.