{"title":"Parboiling of pigmented and non-pigmented Philippine rice (Oryza sativa L.) cultivars: Textural properties and carbohydrate quality","authors":"J. E. I. Zapater, R. Manaois","doi":"10.47836/ifrj.30.6.21","DOIUrl":null,"url":null,"abstract":"Parboiling improves rice carbohydrate quality, which is beneficial for diabetes management in Asia. However, parboiling drastically alters cooked rice texture, making it unappealing for Filipinos, who generally prefer tender cooked rice. The present work evaluated the carbohydrate quality and cooked rice hardness of nine local pigmented and non-pigmented rice varieties as affected by parboiling and cooking treatments. The amylose content (AC), retrogradation potential (RP), and resistant starch (RS) content were determined, and the samples with the highest RS were further investigated for their thermal properties and starch morphology. Results showed that parboiling increased RS level by as much as five-fold, particularly in the red rice Minaangan, which had intermediate AC and the highest RP (2,821.5 cP) among the samples. The highest RS, 2.71 ± 0.02 g/100 g, was recorded in parboiled NSIC Rc 222 cooked at 1:2.5 (rice:water). It also produced soft cooked rice, which was significantly better than its non-parboiled counterpart. High proportion of water needed to gelatinise parboiled non-pigmented NSIC Rc 222 was due to higher starch crystallinity as indicated by its gelatinisation enthalpy and intact starch granule. In conclusion, parboiling and cooking at appropriate rice:water ratio of NSIC Rc222 and Minaangan could deliver healthier cooked rice with Filipino preferred textural quality.","PeriodicalId":13754,"journal":{"name":"international food research journal","volume":null,"pages":null},"PeriodicalIF":0.7000,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"international food research journal","FirstCategoryId":"97","ListUrlMain":"https://doi.org/10.47836/ifrj.30.6.21","RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"FOOD SCIENCE & TECHNOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
Parboiling improves rice carbohydrate quality, which is beneficial for diabetes management in Asia. However, parboiling drastically alters cooked rice texture, making it unappealing for Filipinos, who generally prefer tender cooked rice. The present work evaluated the carbohydrate quality and cooked rice hardness of nine local pigmented and non-pigmented rice varieties as affected by parboiling and cooking treatments. The amylose content (AC), retrogradation potential (RP), and resistant starch (RS) content were determined, and the samples with the highest RS were further investigated for their thermal properties and starch morphology. Results showed that parboiling increased RS level by as much as five-fold, particularly in the red rice Minaangan, which had intermediate AC and the highest RP (2,821.5 cP) among the samples. The highest RS, 2.71 ± 0.02 g/100 g, was recorded in parboiled NSIC Rc 222 cooked at 1:2.5 (rice:water). It also produced soft cooked rice, which was significantly better than its non-parboiled counterpart. High proportion of water needed to gelatinise parboiled non-pigmented NSIC Rc 222 was due to higher starch crystallinity as indicated by its gelatinisation enthalpy and intact starch granule. In conclusion, parboiling and cooking at appropriate rice:water ratio of NSIC Rc222 and Minaangan could deliver healthier cooked rice with Filipino preferred textural quality.
期刊介绍:
The International Food Research Journal (IFRJ) publishes papers in English, six (6) issues a year with the coverage of:
Food Science and Technology
Nutrition and Dietetics
Agriculture, multidisciplinary
Chemistry, multidisciplinary
The scope of the Journal includes:
Food Science, Food Technology and Food Biotechnology
Product Development and Sensory Evaluation
Food Habits, Nutrition, and Health
Food Safety and Quality
Food Chemistry, Food Microbiology, Food Analysis and Testing
Food Engineering
Food Packaging
Food Waste Management
Food Entrepreneur
Food Regulatory
Post-Harvest Food Management
Food Supply Chain Management
Halal Food and Management