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| Effect of high efficiency liquid nitrogen filling technology on quality and product packaging of sunflower seed oil |
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| KeyWord:liquid nitrogen filling sunflower seed oil quality product packaging full bottle compression capacity |
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| Abstract: |
| High efficiency liquid nitrogen filling technology was used to fill sunflower seed oil, and it was compared with gas nitrogen filling and gas-liquid nitrogen mixed filling technology. The effects of nitrogen filling method on quality and product packaging of sunflower seed oil were studied. The results showed that the change trends of acid value and peroxide value of the samples with three nitrogen filling methods were basically the same. The acid value and peroxide value of liquid nitrogen filling samples were 0.07 mgKOH/g and 1.45 mmol/kg respectively after five months storage at room temperature. Compared with room temperature storage, the acid value of liquid nitrogen filling samples after five months storge at 45 ℃ had little difference, while the peroxide value decreased slightly to 1.30 mmol/kg. The peroxide values of liquid nitrogen filling samples and gas-liquid nitrogen mixed filling samples during initial and storage were slightly higher than that of gas nitrogen filling samples. There was little difference in initial residual oxygen values of three nitrogen filling samples, but the residual oxygen values of liquid nitrogen filling samples and gas-liquid nitrogen mixed filling samples during storage were significantly lower than that of gas nitrogen filling samples. There was positive pressure in the bottle of liquid nitrogen filling sample, and its full bottle compression capacity was better than that of gas nitrogen and gas-liquid nitrogen mixed filling samples. |
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