Effect of composition on the structure and digestibility of starch in Idli batter

Abstract This study investigates the effects of varying the proportion of parboiled rice, raw rice, mixed rice, and black gram on idli batter structure and starch digestibility. A total of six different batters (batters 1 to 6) were prepared by varying the composition of raw material. Batter 1 (Parb...

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Main Authors: Leeann Roy, Somanathan Karthiga Reshmi, Jeyan Arthur Moses, Chinnaswamy Anandharamakrishnan
Format: Article
Language:English
Published: Wiley 2023-09-01
Series:Food Bioengineering
Subjects:
Online Access:https://doi.org/10.1002/fbe2.12059
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author Leeann Roy
Somanathan Karthiga Reshmi
Jeyan Arthur Moses
Chinnaswamy Anandharamakrishnan
author_facet Leeann Roy
Somanathan Karthiga Reshmi
Jeyan Arthur Moses
Chinnaswamy Anandharamakrishnan
author_sort Leeann Roy
collection DOAJ
description Abstract This study investigates the effects of varying the proportion of parboiled rice, raw rice, mixed rice, and black gram on idli batter structure and starch digestibility. A total of six different batters (batters 1 to 6) were prepared by varying the composition of raw material. Batter 1 (Parboiled Rice: Black gram dal: Baking soda), Batter 2 (Parboiled Rice: Black gram dal: Yeast), Batter 3 (Parboiled Rice: Raw Rice: Mixed Rice: Black gram dal), Batter 4 (Raw Rice: Mixed Rice: Black gram dal), Batter 5 (Raw rice: Yeast) and Batter 6 (Parboiled Rice: Black gram dal). In comparison to the other five batters, batter 6 (parboiled rice (3): Black gram dal (1)) exhibited superior texture, sensory, enzyme activity, and better digestibility. Structure changes in starch for batter 6 were noticeable until day five and complete degradation was observed after day seven, whereas in other batters, the structure degraded from 3rd day of storage. Batter 6 exhibited the highest protein content (0.6 mg/g to 0.3 mg/g) and lowest reducing sugar content (4.51 mg/g to 6.66 mg/g) from day 1 to day 7 of the storage period. The difference in amylose content from day 1 to day 7 (27.80% to 26.75%) was low compared to others. The starch digestibility index of batter 6 was 40.35% on day 1 and 68.96% on day 7 which was comparatively less compared to other prepared batters. As a result, the proportion of dal and parboiled rice used in batter preparation significantly influences its storage, digestibility, and enzyme activity. Thus, studying the method and proportion of idli preparation helps us understand how the batter is stored, digested, and modified, thereby improving our understanding of Indian cuisine.
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spelling doaj.art-ceff630e7707487c92ce82b160cd644c2023-09-29T08:05:29ZengWileyFood Bioengineering2770-20812023-09-012325126310.1002/fbe2.12059Effect of composition on the structure and digestibility of starch in Idli batterLeeann Roy0Somanathan Karthiga Reshmi1Jeyan Arthur Moses2Chinnaswamy Anandharamakrishnan3Department of Food Technology and Quality Assurance College of Indigenous Food Technology Perinjottakkal Kerala IndiaComputational Modeling & Nanoscale Processing Unit, National Institute of Food Technology, Entrepreneurship and Management—Thanjavur, Ministry of Food Processing Industries, Govt. of India Thanjavur Tamil Nadu IndiaComputational Modeling & Nanoscale Processing Unit, National Institute of Food Technology, Entrepreneurship and Management—Thanjavur, Ministry of Food Processing Industries, Govt. of India Thanjavur Tamil Nadu IndiaComputational Modeling & Nanoscale Processing Unit, National Institute of Food Technology, Entrepreneurship and Management—Thanjavur, Ministry of Food Processing Industries, Govt. of India Thanjavur Tamil Nadu IndiaAbstract This study investigates the effects of varying the proportion of parboiled rice, raw rice, mixed rice, and black gram on idli batter structure and starch digestibility. A total of six different batters (batters 1 to 6) were prepared by varying the composition of raw material. Batter 1 (Parboiled Rice: Black gram dal: Baking soda), Batter 2 (Parboiled Rice: Black gram dal: Yeast), Batter 3 (Parboiled Rice: Raw Rice: Mixed Rice: Black gram dal), Batter 4 (Raw Rice: Mixed Rice: Black gram dal), Batter 5 (Raw rice: Yeast) and Batter 6 (Parboiled Rice: Black gram dal). In comparison to the other five batters, batter 6 (parboiled rice (3): Black gram dal (1)) exhibited superior texture, sensory, enzyme activity, and better digestibility. Structure changes in starch for batter 6 were noticeable until day five and complete degradation was observed after day seven, whereas in other batters, the structure degraded from 3rd day of storage. Batter 6 exhibited the highest protein content (0.6 mg/g to 0.3 mg/g) and lowest reducing sugar content (4.51 mg/g to 6.66 mg/g) from day 1 to day 7 of the storage period. The difference in amylose content from day 1 to day 7 (27.80% to 26.75%) was low compared to others. The starch digestibility index of batter 6 was 40.35% on day 1 and 68.96% on day 7 which was comparatively less compared to other prepared batters. As a result, the proportion of dal and parboiled rice used in batter preparation significantly influences its storage, digestibility, and enzyme activity. Thus, studying the method and proportion of idli preparation helps us understand how the batter is stored, digested, and modified, thereby improving our understanding of Indian cuisine.https://doi.org/10.1002/fbe2.12059batter preparationcharacterizationdigestibilityenzyme activitypropertiesstarch structure
spellingShingle Leeann Roy
Somanathan Karthiga Reshmi
Jeyan Arthur Moses
Chinnaswamy Anandharamakrishnan
Effect of composition on the structure and digestibility of starch in Idli batter
Food Bioengineering
batter preparation
characterization
digestibility
enzyme activity
properties
starch structure
title Effect of composition on the structure and digestibility of starch in Idli batter
title_full Effect of composition on the structure and digestibility of starch in Idli batter
title_fullStr Effect of composition on the structure and digestibility of starch in Idli batter
title_full_unstemmed Effect of composition on the structure and digestibility of starch in Idli batter
title_short Effect of composition on the structure and digestibility of starch in Idli batter
title_sort effect of composition on the structure and digestibility of starch in idli batter
topic batter preparation
characterization
digestibility
enzyme activity
properties
starch structure
url https://doi.org/10.1002/fbe2.12059
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AT chinnaswamyanandharamakrishnan effectofcompositiononthestructureanddigestibilityofstarchinidlibatter