Pomegranate turning black brown may be due to spoilage, normal oxidation, or variety characteristics. Pomegranate spoilage is usually accompanied by odor, mold, or soft and rotten flesh. If only the skin changes color and the flesh is normal, it may be considered spoilage. The appearance of black brown on the skin or flesh of pomegranate may be caused by various factors. Fresh pomegranate skins are prone to local browning after compression or collision, and this physical damage does not affect the quality of the internal flesh. After some pomegranate varieties mature, their skin naturally appears dark brown or purple black, which is a normal phenomenon. After pomegranate is cut open and exposed to air, the oxidation of polyphenols in the flesh can also cause the color to darken, but the taste is usually not affected. Excessive humidity in the storage environment may lead to the growth of mold on the pomegranate skin, which initially appears as black brown spots and later spreads with a moldy smell. If the flesh inside pomegranate shows a large area of black brown color and becomes soft in texture, it usually indicates that it has rotted and deteriorated. Pomegranates that have gone bad often have a noticeable odor, and the flesh of the fruit will change from crystal clear to cloudy and soft. Mycelium or mold may be observed on the skin. If black brown only exists on the white membrane between grains, it may be a natural phenomenon of tannic acid oxidation deposition. Pomegranates that have been refrigerated for a long time may experience local browning due to low-temperature frostbite, but they can still be consumed when they are not moldy. Choose pomegranates with intact skin and heavy texture when purchasing, and keep them ventilated and dry during storage to reduce the probability of spoilage. It is recommended to seal and refrigerate the sliced pomegranate and consume it as soon as possible to avoid oxidation and microbial growth.

When consuming pomegranates in daily life, attention should be paid to the condition of the fruit. The slightly oxidized and discolored flesh can be removed before consumption. If mold or odor is found, the whole fruit should be discarded. When storing pomegranates, you can first wipe the moisture on the skin with a dry cloth and store them in a cool and ventilated place or in a fresh-keeping box, avoiding mixing with other perishable fruits. Moderate consumption of fresh pomegranates can help supplement vitamin C and anthocyanins, but spoiled fruits may cause gastrointestinal discomfort. If abnormalities are detected, consumption should be stopped in a timely manner.


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