KARAKTERISTIK TRANSMISI GELOMBANG ULTRASONIK DAN HUBUNGANNYA DENGAN SIFAT FISIKO-KIMIA BUAH NAGA
Abstract: Commonly the quality
of dragon fruit in Indonesia is determined manually by using visual appearances
and it gives un-uniformly results caused by human factors and the judgement is
not reflected the internal quality of dragon fruit. Destructive method is
usually used to determine the internal quality of dragon fruit that is
unsuitable for quality control of fresh dragon fruit. So a non destructive method is required for
evaluation the quality of dragon fruit. The objectives of the research were to
determine the physico-chemical and ultrasound wave transmission characteristics
of super red dragon fruit according to harvesting time, and to study the
relationship between ultrasound wave transmission characteristics and
physico-chemical characteristics of super red dragon fruit. Super-red dragon
fruits were harvested at 30, 32, and 34 days after flower blooms (150 samples)
from PT Wahana Cory, Ciapus, Bogor. The results showed that the ultrasound
velocity of super red dragon fruit ranged from 614.10 to 680.16 m/s and
the attenuation coefficient were 57.32 to 62.40 Neper per meter. The
attenuation coefficient was significantly different according to maturity. There were significant correlations between
ultrasound parameters (velocity and attenuation coefficient) and
physico-chemical of super red dragon fruit (firmness, sugar content, total
soluble solid, and total acid).
Penulis: Siti Djamila, I Wayan
Budiastra, Sutrisno
Kode Jurnal: jppertaniandd100221