Article(id=1320882730955550761, tenantId=1146029695717560320, journalId=1260987677001138203, issueId=1320880138208784845, articleNumber=null, orderNo=null, doi=10.13386/j.issn1002-0306.2025080068, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1754841600000, receivedDateStr=2025-08-11, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1792852583874, onlineDateStr=2026-10-24, pubDate=1785513600000, pubDateStr=2026-08-01, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1792852583874, onlineIssueDateStr=2026-10-24, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1792852583874, creator=13701087609, updateTime=1792852583874, updator=13701087609, issue=Issue{id=1320880138208784845, tenantId=1146029695717560320, journalId=1260987677001138203, year='2026', volume='47', issue='15', pageStart='1', pageEnd='524', issueExtLink='null', onlineDate='null', pubDate='1785513600000', pubDateStr='2026-08-01', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1792851965715, creator='13701087609', updateTime=1792851965715, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext=null, issueFiles=null, downloadFileDto=null}, startPage=337, endPage=344, ext={EN=ArticleExt(id=1320882734709452843, articleId=1320882730955550761, tenantId=1146029695717560320, journalId=1260987677001138203, language=EN, title=Rapidly Quantifying Total Sugar and Nitrogen Contents during Carotenoid Fermentation Processes Using Near-infrared Spectroscopy, columnId=1261343843585241413, journalTitle=Science and Technology of Food Industry, columnName=Analysis and Determination, runingTitle=null, highlight=null, articleAbstract=
Xinhui dried tangerine peel fruit pulp was used as a raw material to establish a rapid and quantitative analytical method for monitoring the total soluble sugar (TSS) and nitrogen (TN) contents during carotenoid fermentation by Rhodotorula mucilaginosa (R. mucilaginosa). Near-infrared spectroscopy (NIR) was integrated with partial least squares regression (PLSR) to construct models for quantifying the TSS and TN in fermentation broth. The coefficient of determination for the prediction set (R2p), root mean square error of prediction (RMSEP), and relative percent deviation (RPD) were used as evaluation metrics, and the effects of different spectral preprocessing methods and feature wavenumbers on model performance were systematically compared. The results were externally validated using independent samples. The optimal models for quantifying the TSS and TN contents were obtained using multiplicative scatter correction (MSC) for preprocessing the spectrum and competitive adaptive reweighting sampling (CARS) for selecting the feature wavenumber. The model for quantifying TSS achieved a R2p of 0.9670, a RMSEP of 2.6587, and an external validation RPD of 4.8386, indicating high-precision quantitative analysis. The model for quantifying TN yielded R2p and RMSEP values of 0.9502 and 0.0624, respectively, with an external validation RPD of 2.7423, which indicated suitability for routine quantitative analyses. The t-test results for the TSS and TN models indicated that the predicted and measured values did not significantly differ (P>0.05), indicating high accuracy and stability. These models can be used for rapidly monitoring the TSS and TN contents in R. mucilaginosa carotenoid fermentation broth samples.
, authors=Lian DAI
1, Guangjun SONG
2, Wujie ZHONG
1, Min DING
1, Yuyue WAN
1, Jihong XIE
1, Huali JIAN
1, *, authorsList=Lian DAI, Guangjun SONG, Wujie ZHONG, Min DING, Yuyue WAN, Jihong XIE, Huali JIAN, authorCompany=null, correspAuthors=Huali JIAN, authorNote=null, correspAuthorsNote=null, copyrightStatement=Copyright © 2026 Science and Technology of Food Industry. All rights reserved., copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1320882738140393524, articleId=1320882730955550761, tenantId=1146029695717560320, journalId=1260987677001138203, language=CN, title=基于近红外光谱的类胡萝卜素发酵过程总糖与总氮快速定量监测, columnId=1261343846139572559, journalTitle=食品工业科技, columnName=分析检测, runingTitle=null, highlight=null, articleAbstract=
为建立胶红酵母(Rhodotorula mucilaginosa,R. mucilaginosa)类胡萝卜素发酵过程中总糖和总氮的快速定量分析方法,本研究以新会陈皮柑果肉为原料,采用近红外(Near-infrared spectroscopy,NIR)光谱技术结合偏最小二乘回归(Partial least squares regression,PLSR),构建了发酵液中总糖(Total soluble sugar,TSS)和总氮(Total nitrogen,TN)的NIR定量模型。以预测集决定系数(Coefficient of determination for prediction set,R2p)、预测均方根误差(Root mean square error of prediction,RMSEP)和相对分析误差(Relative percent deviation,RPD)等作为模型评价指标,系统地比较了不同光谱预处理方法及特征波数筛选对模型性能的影响,同时通过独立样本对模型进行外部验证,结果表明:采用多元散射校正(Multiplicative scatter correction,MSC)进行光谱预处理,并结合竞争性自适应重加权采样法(Competitive adaptive reweighted sampling,CARS)筛选特征波数,所建立的总糖及总氮定量模型效果最佳。其中TSS定量模型R2p为0.9670,RMSEP为2.6587,外部验证RPD值为4.8386,可用于高精度定量分析。TN定量模型R2p和RMSEP分别为0.9502和0.0624,外部验证RPD值为2.7423,适用于常规定量分析。TSS及TN模型的t检验结果均显示预测值与实测值之间无显著差异(P>0.05),具有较好的准确性和稳定性,可用于快速监测胶红酵母类胡萝卜素发酵液样品的TSS和TN含量。
, authors=戴炼
1, 宋光均
2, 钟武杰
1, 丁敏
1, 万语悦
1, 谢吉红
1, 蹇华丽
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Mahalanobis distance for all samples, figureFileSmall=eSPDjPAZhXY19JRRZfoJ3w==, figureFileBig=Qq6HrLhCEByBJxeyxmliKA==, tableContent=null), ArticleFig(id=1320882748391272557, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320882730955550761, language=CN, label=图1, caption=
所有样本马氏距离, figureFileSmall=eSPDjPAZhXY19JRRZfoJ3w==, figureFileBig=Qq6HrLhCEByBJxeyxmliKA==, tableContent=null), ArticleFig(id=1320882748584210542, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320882730955550761, language=EN, label=Fig.2, caption=
NIR raw spectrum (a) and preprocessed spectra (b~e) of carotenoid fermentation broth, figureFileSmall=j4iDJS/qtgMM1b7i2Ylwpg==, figureFileBig=7Lh1jFAgD725b9kISA+YYQ==, tableContent=null), ArticleFig(id=1320882748663902319, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320882730955550761, language=CN, label=图2, caption=
类胡萝卜素发酵液NIR原始光谱图(a)和预处理光谱图(b~e), figureFileSmall=j4iDJS/qtgMM1b7i2Ylwpg==, figureFileBig=7Lh1jFAgD725b9kISA+YYQ==, tableContent=null), ArticleFig(id=1320882748760371313, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320882730955550761, language=EN, label=Fig.3, caption=
Characteristic wavenumbers selected by different feature selection methods for TSS models and TN models in carotenoid fermentation broth, figureFileSmall=0g7LuxPoqsmQvEus/TKgvw==, figureFileBig=GveKiHGc4wu5l9U/UhcQkg==, tableContent=null), ArticleFig(id=1320882748865228914, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320882730955550761, language=CN, label=图3, caption=
不同特征筛选方法对类胡萝卜素发酵液TSS与TN模型的特征波数选择结果注:TSS模型:(a)UVE,(c)RF,(e)CARS;TN模型:(b)UVE,(d)RF,(f)CARS。
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Correlation plots between measured and predicted values for TSS (a) and TN (b) quantitative models, figureFileSmall=5ZYGxWAcIyYHaNazqn27LA==, figureFileBig=+Ku1bV1Cv7dQUh7yqUzxaw==, tableContent=null), ArticleFig(id=1320882749033001076, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320882730955550761, language=CN, label=图4, caption=
TSS(a)和TN(b)定量模型的真实值与预测值的相关性, figureFileSmall=5ZYGxWAcIyYHaNazqn27LA==, figureFileBig=+Ku1bV1Cv7dQUh7yqUzxaw==, tableContent=null), ArticleFig(id=1320882750668779637, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320882730955550761, language=EN, label=Table 1, caption=
Results of the partitioning of carotenoid fermentation broth samples by SPXY
, figureFileSmall=null, figureFileBig=null, tableContent=
| 指标 | TSS | | TN |
|---|
| 训练集 | 预测集 | | 训练集 | 预测集 |
|---|
| 样本量 | 133 | 45 | | 133 | 45 |
| 最大值(mg/mL) | 88.26 | 78.91 | | 2.54 | 2.19 |
| 最小值(mg/mL) | 13.09 | 16.79 | | 0.75 | 1.03 |
| 平均值(mg/mL) | 48.16 | 55.29 | | 1.59 | 1.53 |
| 标准偏差 | 16.83 | 15.03 | | 0.38 | 0.35 |
), ArticleFig(id=1320882750744277110, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320882730955550761, language=CN, label=表1, caption=
SPXY法划分类胡萝卜素发酵液样品集结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 指标 | TSS | | TN |
|---|
| 训练集 | 预测集 | | 训练集 | 预测集 |
|---|
| 样本量 | 133 | 45 | | 133 | 45 |
| 最大值(mg/mL) | 88.26 | 78.91 | | 2.54 | 2.19 |
| 最小值(mg/mL) | 13.09 | 16.79 | | 0.75 | 1.03 |
| 平均值(mg/mL) | 48.16 | 55.29 | | 1.59 | 1.53 |
| 标准偏差 | 16.83 | 15.03 | | 0.38 | 0.35 |
), ArticleFig(id=1320882750840746103, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320882730955550761, language=EN, label=Table 2, caption=
Effect of spectral preprocessing methods on PLSR model results
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| 预处理方法 | TSS | | TN |
|---|
| R2p | RMSEP | SD | RPD | | R2p | RMSEP | SD | RPD |
|---|
| None | 0.8067 | 6.5002 | 0.0572 | 2.5114 | | 0.8553 | 0.3674 | 0.0581 | 2.5627 |
| SG | 0.8478 | 5.4509 | 0.0435 | 2.9406 | | 0.8824 | 0.1812 | 0.0380 | 2.8370 |
| SNV | 0.8635 | 4.5917 | 0.0423 | 3.2213 | | 0.9023 | 0.1257 | 0.0758 | 3.1604 |
| MSC | 0.9013 | 3.8071 | 0.0295 | 3.4197 | | 0.9064 | 0.1266 | 0.0902 | 3.1999 |
| FD | 0.8697 | 4.4056 | 0.0439 | 3.1048 | | 0.8894 | 0.2581 | 0.0844 | 2.8906 |
), ArticleFig(id=1320882750933020792, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320882730955550761, language=CN, label=表2, caption=
光谱预处理方法对PLRS模型结果的影响
, figureFileSmall=null, figureFileBig=null, tableContent=
| 预处理方法 | TSS | | TN |
|---|
| R2p | RMSEP | SD | RPD | | R2p | RMSEP | SD | RPD |
|---|
| None | 0.8067 | 6.5002 | 0.0572 | 2.5114 | | 0.8553 | 0.3674 | 0.0581 | 2.5627 |
| SG | 0.8478 | 5.4509 | 0.0435 | 2.9406 | | 0.8824 | 0.1812 | 0.0380 | 2.8370 |
| SNV | 0.8635 | 4.5917 | 0.0423 | 3.2213 | | 0.9023 | 0.1257 | 0.0758 | 3.1604 |
| MSC | 0.9013 | 3.8071 | 0.0295 | 3.4197 | | 0.9064 | 0.1266 | 0.0902 | 3.1999 |
| FD | 0.8697 | 4.4056 | 0.0439 | 3.1048 | | 0.8894 | 0.2581 | 0.0844 | 2.8906 |
), ArticleFig(id=1320882751029489785, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320882730955550761, language=EN, label=Table 3, caption=
Prediction effect of TSS and TN models developed using MSC combined with different feature selection methods
, figureFileSmall=null, figureFileBig=null, tableContent=
| 指标 | 特征筛选方法 | 变量数 | 主因子数 | R2p | RMSEP | RPD |
|---|
| TSS | None | 1557 | 10 | 0.9013 | 3.8071 | 3.4197 |
| UVE | 245 | 8 | 0.9417 | 3.4433 | 4.4233 |
| RF | 80 | 6 | 0.9337 | 3.5949 | 4.1500 |
| CARS | 68 | 9 | 0.9670 | 2.6587 | 5.6627 |
| TN | None | 1557 | 9 | 0.9064 | 0.1266 | 3.1999 |
| UVE | 382 | 8 | 0.9344 | 0.0718 | 3.9267 |
| RF | 80 | 7 | 0.9301 | 0.0751 | 3.8687 |
| CARS | 46 | 9 | 0.9502 | 0.0624 | 4.6604 |
), ArticleFig(id=1320882751121764474, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320882730955550761, language=CN, label=表3, caption=
MSC结合特征筛选的TSS和TN模型预测结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 指标 | 特征筛选方法 | 变量数 | 主因子数 | R2p | RMSEP | RPD |
|---|
| TSS | None | 1557 | 10 | 0.9013 | 3.8071 | 3.4197 |
| UVE | 245 | 8 | 0.9417 | 3.4433 | 4.4233 |
| RF | 80 | 6 | 0.9337 | 3.5949 | 4.1500 |
| CARS | 68 | 9 | 0.9670 | 2.6587 | 5.6627 |
| TN | None | 1557 | 9 | 0.9064 | 0.1266 | 3.1999 |
| UVE | 382 | 8 | 0.9344 | 0.0718 | 3.9267 |
| RF | 80 | 7 | 0.9301 | 0.0751 | 3.8687 |
| CARS | 46 | 9 | 0.9502 | 0.0624 | 4.6604 |
), ArticleFig(id=1320882751230816379, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320882730955550761, language=EN, label=Table 4, caption=
Results of external validation
, figureFileSmall=null, figureFileBig=null, tableContent=
| 组分 | 样品量 | 模型 | RMSEP | RPD | P值 | 适用性 |
|---|
| 总糖 | 20 | MSC+CARS+PLSR | 2.7064 | 4.8386 | 0.2300 | 高精度定量分析 |
| 总氮 | 20 | MSC+CARS+PLSR | 0.1628 | 2.7423 | 0.9972 | 常规定量分析 |
), ArticleFig(id=1320882751335673980, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1320882730955550761, language=CN, label=表4, caption=
外部验证结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 组分 | 样品量 | 模型 | RMSEP | RPD | P值 | 适用性 |
|---|
| 总糖 | 20 | MSC+CARS+PLSR | 2.7064 | 4.8386 | 0.2300 | 高精度定量分析 |
| 总氮 | 20 | MSC+CARS+PLSR | 0.1628 | 2.7423 | 0.9972 | 常规定量分析 |
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