Image of PENGARUH FREKUENSI DAN LAMA ULTRASONIKASI TERHADAP KARAKTERISTIK FISIK DAN KIMIA NATA DE COCO HASIL PEWARNAAN DAUN SUJI ( Dracaena angustifolia )

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PENGARUH FREKUENSI DAN LAMA ULTRASONIKASI TERHADAP KARAKTERISTIK FISIK DAN KIMIA NATA DE COCO HASIL PEWARNAAN DAUN SUJI ( Dracaena angustifolia )

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This study aimed to determine the effect of frequency and duration of ultrasonication on the physical and chemical characteristics of nata de coco colored with suji (Dracaena angustifolia) leaves extract. The experiment was designed as a Factorial Completely Randomized Design with two treatment factors and each treatment was repeated three times. The first factor was frequency (20 kHz and 40 kHz) and the second factor was duration of ultrasonication (15, 30, 45, and 60 minutes). The observed parameters on nata de coco colored with suji leaves extract were texture, color (lightness (L*), greenness (-a*), yellowness (b*), total color difference (∆E*) and total color difference after boiling), pH and antioxidant. The result showed that the frequency and duration of ultrasonication had a significant effect on texture, lightness (L*), total color difference (∆E*) and total color difference after boiling of nata de coco colored with suji leaves extract; the duration of ultrasonication had a significant effect on pH of nata de coco colored with suji leaves extract; the interaction between two treatment factors had a significant effect on greenness (-a*), yellowness (b*), and antioxidant of nata de coco colored with suji leaves extract. The A2B3 treatment (40 kHz, 45 minutes) was the best treatment based on the value of total color difference (∆E* = 2.11) with characteristics of texture 25.2 gf, lightness 43.23%, greenness 5.67, yellowness 3.77, total color difference after boiling 21.21, pH 3.87 and IC50 value of an antioxidant 1536.33 ppm.

Availability
Inventory Code Barcode Call Number Location Status
2207002125T74082T740822022Central Library (Referens)Available but not for loan - Not for Loan
Detail Information
Series Title
-
Call Number
T740822022
Publisher
Inderalaya : .,
Collation
v, 50 hlm.; ilus.; 29 cm
Language
Indonesia
ISBN/ISSN
-
Classification
668.607
Content Type
-
Media Type
-
Carrier Type
-
Edition
-
Subject(s)
Prodi Teknologi Hasil Pertanian
Bahan Kimia Pertanian
Specific Detail Info
-
Statement of Responsibility
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No other version available

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