Comprehensive Evaluation of 17 Qualities of 84 Types of Rice Based on Principal Component Analysis

Shi, Shijie; Wang, Enting; Li, Chengxuan; Zhou, Hui; Cai, Mingli; Cao, Cougui; Jiang, Yang

doi:10.3390/foods10112883

Cited by 27 publications

(16 citation statements)

References 41 publications

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“…Principal component analysis (PCA) is a statistical method that transforms multi-index into a few comprehensive indexes by using the idea of dimension reduction (Xin et al, 2019 ; Wang X. K. et al, 2020 ; Bi et al, 2022 ). These comprehensive indicators retain most of the information of the original indicators (Shi et al, 2021 ; Tang et al, 2021 ). The Kaiser–Meyer–Olkin (KMO) value was 0.582 and Bartlett's sphericity test was p < 0.001, indicating that PCA could be performed (Hao et al, 2022 ).…”

Section: Resultsmentioning

confidence: 99%

Field irrigation using magnetized brackish water affects the growth and water consumption of Haloxylon ammodendron seedlings in an arid area

et al. 2022

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Freshwater resources in arid areas are scarce, while there are abundant brackish water reserves that have great application potential for the irrigation of desert plants. However, brackish water irrigation will lead to soil salinization, which will inhibit plant growth. Magnetized water is a new technology that makes the use of brackish water feasible. The present study assessed the effects of irrigation using three water types (fresh, brackish, and magnetized brackish water) and five irrigation amounts (W1, 81 mm; W2, 108 mm; W3, 135 mm; W4, 162mm; and W5, 189 mm) on soil salinity and Haloxylon ammodendron seedling growth. Compared with fresh water, brackish water irrigation inhibited the growth of H. ammodendron and reduced water consumption. Irrigation with magnetized brackish water effectively improved the effect of soil salt leaching, promoted the growth and water absorption of H. ammodendron roots, and stimulated the growth of plant height, basal diameter, shoot length, and crown width. Based on the principal component analysis, the first three treatments of H. ammodendron comprehensive growth state were FW4, FW3, and MBW4, respectively. This showed that magnetized brackish water combined with an appropriate irrigation amount was helpful to optimize the growth of H. ammodendron seedlings on the basis of fresh water saving. Therefore, magnetized brackish water irrigation is an effective strategy for ensuring the establishment and growth of H. ammodendron seedlings in arid and water-deficient areas.

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Section: Resultsmentioning

confidence: 99%

Field irrigation using magnetized brackish water affects the growth and water consumption of Haloxylon ammodendron seedlings in an arid area

et al. 2022

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“…With the increase in the nitrogen fertilizer level, the protein content of rice increased significantly, and the amylose content decreased significantly (Figure ). Nitrogen was one of the most important growth elements for plants . After the application of nitrogen fertilizer, rice leaves tended to be greener and more nitrogen is transferred to the grains, so the protein content in the grains is higher .…”

Section: Resultsmentioning

confidence: 99%

“…Rice production is inseparable from the regulation of cultivation technology, and nitrogen fertilizer is one of the most important cultivation conditions . The components of rice grains are starch (70–80%) and protein (5–7%).…”

Section: Introductionmentioning

confidence: 99%

Effects of Nitrogen Fertilizer on the Starch Structure, Protein Distribution, and Quality of Rice

Shi

Zhang

et al. 2022

ACS Food Sci. Technol.

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As an important cultivation measure, nitrogen fertilizer application can improve the rice yield, but it also reduces the eating quality of rice. Since protein and starch are the most important chemical substances in rice, protein and starch determine the eating quality of rice. It is unclear how nitrogen fertilizer application affects protein and starch and then affects rice eating quality. Our results showed that, with the increase in the nitrogen application level, the milling quality of rice gradually increased, but the eating quality of rice gradually decreased. Nitrogen fertilizer greatly increased the protein content of the outer layer of rice and decreased the short-range ordered structure of starch. The relative crystallinity of starch and the proportion of large granular starch first decreased and then increased. The changes of protein distribution and starch structure inhibited the gelatinization of starch gel and reduced the peak viscosity of starch. Nitrogen fertilization resulted in more protein interacting with starch and reduced the rice eating quality.

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“…However, the change in the taste value of rice under different nutrient management has not been studied. Nitrogen management has been proved to be one of the most important factors affecting rice taste quality ( 12 , 13 ). Current research studies have focused on nitrogen fertilizers that reduce the taste quality of rice, and there are only few studies on the evaluation of the taste quality of rice.…”

Section: Introductionmentioning

confidence: 99%

Use of Protein Content, Amylose Content, and RVA Parameters to Evaluate the Taste Quality of Rice

Shi

Wang

et al. 2022

Front. Nutr.

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Taste quality of rice is the key to its value. However, it is greatly affected by rice types and the environment. It is a complex but necessary factor to accurately evaluate the taste quality of various types of rice in different environments. In this study, 7 different types of rice with different taste values were used as materials, and 12 nitrogen fertilizer treatments were applied to obtain 84 different rice taste values. We used protein content, amylose content, and RVA to evaluate changes in the taste value of rice. Rice with high taste value tended to have higher amylose content, peak viscosity, hold viscosity, final viscosity, and breakdown, as well as lower protein content, pasting temperature, and peak time. Protein and amylose contents affected the taste value of rice by affecting the RVA profiles except for setback. For high and low taste-value rice types, protein content could explain 66.8 and 42.9% of the variation in taste value, respectively. In the case of medium taste-value type, protein content was not enough to evaluate the taste quality of rice. Stickiness could explain 59.6% of the variation in taste value. When the protein content of rice was less than 6.61% or greater than 9.34%, it could be used to reflect the taste quality of rice. When the protein content was in between the two, protein content was not enough to reflect the taste quality of rice. Our results suggested that protein content could better reflect the taste quality change for rice, which provided a theoretical and technical basis for the accurate evaluation of the taste value of various types of rice.

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Comprehensive Evaluation of 17 Qualities of 84 Types of Rice Based on Principal Component Analysis

Cited by 27 publications

References 41 publications

Field irrigation using magnetized brackish water affects the growth and water consumption of Haloxylon ammodendron seedlings in an arid area

Field irrigation using magnetized brackish water affects the growth and water consumption of Haloxylon ammodendron seedlings in an arid area

Effects of Nitrogen Fertilizer on the Starch Structure, Protein Distribution, and Quality of Rice

Use of Protein Content, Amylose Content, and RVA Parameters to Evaluate the Taste Quality of Rice

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