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DC Field | Value | Language |
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dc.contributor.advisor | Ahza, Adil Basuki | |
dc.contributor.author | Queentasari, Dini | |
dc.date.accessioned | 2013-02-07T01:48:07Z | |
dc.date.available | 2013-02-07T01:48:07Z | |
dc.date.issued | 2012 | |
dc.identifier.uri | http://repository.ipb.ac.id/handle/123456789/60405 | |
dc.description.abstract | Whole bamboo shoots (Dendrocalamus membranaceus Munro) freshly harvested in Doi Tung were blanched at 90-100 ⁰C in various concentrations of sodium metabisulfite solution (0, 0.5%, 1.0%, and 1.5%) for ten minutes, as pretreatment, and then dried at various temperatures (50 ⁰C, 60 ⁰C, and 70 ⁰C) using a laboratory scale hot air drier. Effects of both pretreatment and drying temperature on quality of dried bamboo shoots were evaluated. There were seven parameters observed: drying time, aw, color, rehydration ratio, shrinkage, firmness, and total residual sulfites. Results showed that drying time decreased with increase in the drying temperature (p<0.01) while both pretreatment and drying temperature had no significant effect (p>0.05) on aw and shrinkage of dried bamboo shoots. Moreover, L* value, b* value, and rehydration ratio increased with increase in concentration of sodium metabisulfite and decrease in drying temperature, whereas a* value increased. The higher b* value and rehydration ratio (p<0.01) were found in samples blanched in 1.5% Na2S2O5 solution and dried at 50 ⁰C and samples blanched in 1.0% Na2S2O5 solution and dried at 60 ⁰C. It was also observed that total residual sulfites in dried-sulfited sample was quite high, ranged from 1250 to 3378 ppm SO2 while the sample blanched in 1.5% Na2S2O5 solution had higher residual sulfites than the other concentrations. Based on the parameters, sample blanched in 1.0% Na2S2O5 solution and then dried at 60 ⁰C was chosen to be the best sample. Results of rating hedonic test confirmed that the rehydrated of the best sample was more preferrable than the rehydrated-commercial dried bamboo shoots. It is suggested that blanching in 1.0% Na2S2O5 solution and then drying at 60 ⁰C is a better drying condition to produce dried bamboo shoots with a desired quality and applicable in Doi Tung. | en |
dc.publisher | IPB ( Bogor Agricultural University ) | |
dc.subject | bamboo shoots | en |
dc.subject | hot air drier | en |
dc.subject | sodium metabisulfite | en |
dc.subject | color | en |
dc.subject | rehydration ratio | en |
dc.title | Effetcs of Pretreatment and Drying Temperature on Quality of Dried Bamboo Shoots (Dendrocalamus membranaceus Munro) | en |
Appears in Collections: | UT - Food Science and Technology |
Files in This Item:
File | Description | Size | Format | |
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F12dqu.pdf Restricted Access | fulltext | 5.89 MB | Adobe PDF | View/Open |
Abstract.pdf Restricted Access | Abstract | 350.39 kB | Adobe PDF | View/Open |
BAB I Pendahuluan.pdf Restricted Access | BAB I | 302.63 kB | Adobe PDF | View/Open |
BAB II Tinjauan Pustaka.pdf Restricted Access | BAB II | 2.73 MB | Adobe PDF | View/Open |
BAB III Materi dan Metode.pdf Restricted Access | BAB III | 413.97 kB | Adobe PDF | View/Open |
BAB IV Hasil dan Pembahasan.pdf Restricted Access | BAB IV | 2.85 MB | Adobe PDF | View/Open |
BAB V Kesimpulan dan Rekomendasi.pdf Restricted Access | BAB V | 362.14 kB | Adobe PDF | View/Open |
Cover.pdf Restricted Access | COVER | 319.67 kB | Adobe PDF | View/Open |
Daftar Pustaka.pdf Restricted Access | DAFTAR PUSTAKA | 319.91 kB | Adobe PDF | View/Open |
Lampiran.pdf Restricted Access | LAMPIRAN | 903.25 kB | Adobe PDF | View/Open |
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