Effect of Pretreatments on the Characteristics of Dried Grey Oyster Mushroom (Pleurotus sajor - caju)
Sodium hypochlorite, sodium metabisulphite and glycerol were effective in reducing the browning of dried mushrooms. Addition of glycerol also improved the texture of rehydrated dried mushrooms while CaCl2 and alum produced a firm textured product, calcium being more effective than alum. Pretreatme...
| Main Authors: | , |
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| Format: | Article |
| Language: | English English |
| Published: |
Universiti Putra Malaysia Press
1994
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| Online Access: | http://psasir.upm.edu.my/id/eprint/3212/ http://psasir.upm.edu.my/id/eprint/3212/1/Effect_of_Pretreatments_on_the_Characteristics_of_Dried_Grey.pdf |
| _version_ | 1848839466987290624 |
|---|---|
| author | Mohamed, Suhaila Tok Siew, Hoo |
| author_facet | Mohamed, Suhaila Tok Siew, Hoo |
| author_sort | Mohamed, Suhaila |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Sodium hypochlorite, sodium metabisulphite and glycerol were effective in reducing the browning of dried mushrooms.
Addition of glycerol also improved the texture of rehydrated dried mushrooms while CaCl2 and alum
produced a firm textured product, calcium being more effective than alum. Pretreatment with 0.3% cysteine-HCl
helped preserve 82% of the ascorbic acid content in dried mushrooms compared to fresh mushrooms. The best
drying temperature for colour and texture was 40'C; 60'C was best for ascorbic acid retention. Glycerol reduced
shrinkage during drying and improved the ability of the dried mushrooms to rehydrate almost to an extent
characteristic offresh mushrooms. Sensory evaluation showed that dried grey oyster mushrooms were well accepted;
pretreatments caused a significant improvement in texture and colour (P < 0.05). The panellists gave
insignificantly different scores for flavour and overall acceptability for all the rehydrated dried mushrooms even
when compared to the fresh mushrooms. |
| first_indexed | 2025-11-15T07:11:54Z |
| format | Article |
| id | upm-3212 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-15T07:11:54Z |
| publishDate | 1994 |
| publisher | Universiti Putra Malaysia Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-32122013-05-27T07:06:29Z http://psasir.upm.edu.my/id/eprint/3212/ Effect of Pretreatments on the Characteristics of Dried Grey Oyster Mushroom (Pleurotus sajor - caju) Mohamed, Suhaila Tok Siew, Hoo Sodium hypochlorite, sodium metabisulphite and glycerol were effective in reducing the browning of dried mushrooms. Addition of glycerol also improved the texture of rehydrated dried mushrooms while CaCl2 and alum produced a firm textured product, calcium being more effective than alum. Pretreatment with 0.3% cysteine-HCl helped preserve 82% of the ascorbic acid content in dried mushrooms compared to fresh mushrooms. The best drying temperature for colour and texture was 40'C; 60'C was best for ascorbic acid retention. Glycerol reduced shrinkage during drying and improved the ability of the dried mushrooms to rehydrate almost to an extent characteristic offresh mushrooms. Sensory evaluation showed that dried grey oyster mushrooms were well accepted; pretreatments caused a significant improvement in texture and colour (P < 0.05). The panellists gave insignificantly different scores for flavour and overall acceptability for all the rehydrated dried mushrooms even when compared to the fresh mushrooms. Universiti Putra Malaysia Press 1994 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/3212/1/Effect_of_Pretreatments_on_the_Characteristics_of_Dried_Grey.pdf Mohamed, Suhaila and Tok Siew, Hoo (1994) Effect of Pretreatments on the Characteristics of Dried Grey Oyster Mushroom (Pleurotus sajor - caju). Pertanika Journal of Tropical Agricultural Science, 17 (2). pp. 111-115. ISSN 0126-6128 English |
| spellingShingle | Mohamed, Suhaila Tok Siew, Hoo Effect of Pretreatments on the Characteristics of Dried Grey Oyster Mushroom (Pleurotus sajor - caju) |
| title | Effect of Pretreatments on the Characteristics of Dried Grey
Oyster Mushroom (Pleurotus sajor - caju) |
| title_full | Effect of Pretreatments on the Characteristics of Dried Grey
Oyster Mushroom (Pleurotus sajor - caju) |
| title_fullStr | Effect of Pretreatments on the Characteristics of Dried Grey
Oyster Mushroom (Pleurotus sajor - caju) |
| title_full_unstemmed | Effect of Pretreatments on the Characteristics of Dried Grey
Oyster Mushroom (Pleurotus sajor - caju) |
| title_short | Effect of Pretreatments on the Characteristics of Dried Grey
Oyster Mushroom (Pleurotus sajor - caju) |
| title_sort | effect of pretreatments on the characteristics of dried grey
oyster mushroom (pleurotus sajor - caju) |
| url | http://psasir.upm.edu.my/id/eprint/3212/ http://psasir.upm.edu.my/id/eprint/3212/1/Effect_of_Pretreatments_on_the_Characteristics_of_Dried_Grey.pdf |