Utilization of Ultrasonic Waves to Reduce Nitrite Levels in Edible Bird Nest
Utilization of Ultrasonic Waves to Reduce Nitrite Levels in Edible Bird Nest
Deny Juniwati1, Hadri Latif2*, Trioso Purnawarman2, Zhang Shuqi3
ABSTRACT
Indonesia is the world’s largest producer and exporter of edible bird nest (EBN), with the leading destination being the People’s Republic of China (PRC). The provision of nitrite levels is less than 30 ppm for raw cleaned EBN, so the EBN is washed to reduce it. The industry generally washes EBN with reverse osmosis (RO) water, but this method does not significantly reduce nitrite levels. Therefore, an alternative method is needed. This study aimed to analyze the effect of washing using RO water combined with ultrasonic waves to reduce nitrite level of EBN. The result of this study illustrated the effectiveness of reducing nitrite levels in EBN from two different methods. Nitrite levels in the samples were measured using a UV-Vis spectrophotometer. Utilizing an ultrasonic wave frequency of 40 kHz for 20 seconds could reduce nearly 80% of nitrite levels. It was considered more effective than standard methods, which were only able to reduce nitrite levels by up to 60%.
Keywords | Edible bird nest, Nitrite, Ultrasonic wave
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August 2023
Vol. 11, Iss. 8, pp. 1218-1410
