Study on the Fatty Acids, Aromatic Compounds and Shelf Life of &lt;i&gt;Paeonia ludlowii&lt;/i&gt; Kernel Oil

Zhang, Chao-Qi; Xu, Yan; Lu, Yazhou; Li, Lian-Qiang; Lan, Xiaozhong; Zhong, Zheng-Chang

doi:10.5650/jos.ess20084

Cited by 11 publications

(10 citation statements)

References 9 publications

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“…The IP of walnut oil at 110 • C was 0.65 h (data not shown), which deviated from the regression curve and was therefore excluded. Similarly, Zhang et al (44) analyzed the IP of Paeonia ludlowii kernel oil by the OXITEST at 70∼110 • C to extrapolate the shelf-life at room temperature. In that study, good linearity was found over a wide temperature range of 50∼100 • C, suggesting that the OXITEST method depending on oxygen consumption could be time-saving for shelf-life estimations since the oxidation mechanism was not altered at high temperatures (80∼100 • C).…”

Section: Optimization Of the Oxitest Methodsmentioning

confidence: 99%

Application of OXITEST for Prediction of Shelf-Lives of Selected Cold-Pressed Oils

Tsao

Chang

et al. 2021

Front. Nutr.

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Introduction: Due to the enhanced awareness of consumers concerning healthy foods, homemade expeller-pressed oils have become popular worldwide. However, an extended storage period may lead to oxidization of the oil and exposure to hazardous byproducts by consumers.Methods: In this study, 10 pressed oil samples prepared from common oilseeds using a small-scale expeller oil press were analyzed by OXITEST with a sample amount of 5 g of oil and an oxygen pressure of 800 kPa under accelerated conditions for shelf-life projections. The oil properties were investigated, including the recovery, smoke point, acid value, iodine value, “fatty acid composition, and contents of pigments and tocopherols”.Results: The autoxidation reaction of various expeller-pressed oils under an accelerated testing system followed zero-order Arrhenius kinetics (R2 > 0.99). Shelf-lives of the pressed oils at 25°C were estimated by extrapolation to range 105~1,089 days. The obtained shelf-lives were significantly correlated with log induction period (IP) values (r > 0.81, p < 0.05) and unsaturated fatty acids (UFAs) (r < −0.69, p < 0.05), but not with the iodine value, acid value, or smoke point. Scatter diagrams between shelf-lives and UFAs suggested that these pressed oils could be grouped by two linear regression curves (r > 0.98, p < 0.05). The predictive equations using multiple linear regression are presented herein, with predictor variables of UFAs and an unspecified item involving potential influencing factors such as tocopherol contents (r > 0.88, p < 0.05).Conclusions: Our findings first revealed that the UFA portion was partially correlated with the shelf-lives of selected expeller-pressed seed oils as estimated by the OXITEST. The derived equations can be applied for shelf-life predictions of expeller-pressed oils stored under dark ambient conditions based on the fatty acid profile.

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Section: Optimization Of the Oxitest Methodsmentioning

confidence: 99%

Application of OXITEST for Prediction of Shelf-Lives of Selected Cold-Pressed Oils

Tsao

Chang

et al. 2021

Front. Nutr.

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“…Also, HPLC-MS was used to identify n = 34 metabolites from leaves tentatively. Zhang and coworkers [ 279 ] determined the fatty acid composition of Paeonia ludlowii (Stern & G. Taylor) D.Y. Hong to assess its potential as food.…”

Section: Selected Instrumental Techniques and Their Applicationsmentioning

confidence: 99%

Selected Instrumental Techniques Applied in Food and Feed: Quality, Safety and Adulteration Analysis

Artavia

Cortés-Herrera

Granados-Chinchilla³

2021

Foods

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This review presents an overall glance at selected instrumental analytical techniques and methods used in food analysis, focusing on their primary food science research applications. The methods described represent approaches that have already been developed or are currently being implemented in our laboratories. Some techniques are widespread and well known and hence we will focus only in very specific examples, whilst the relatively less common techniques applied in food science are covered in a wider fashion. We made a particular emphasis on the works published on this topic in the last five years. When appropriate, we referred the reader to specialized reports highlighting each technique’s principle and focused on said technologies’ applications in the food analysis field. Each example forwarded will consider the advantages and limitations of the application. Certain study cases will typify that several of the techniques mentioned are used simultaneously to resolve an issue, support novel data, or gather further information from the food sample.

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“…Moutan DC., has high ornamental, economic, breeding, medicinal, and development values (Fig. 1) (Hong 1997;Li et al 2018;Li and Wang 2019;Lu et al 2020Lu et al , 2021Zhang et al 2020). Until the end of the twentieth century and the beginning of the twenty-first century, P. ludlowii was listed as an independent species (Hong 1997;Hong and Pan 2005).…”

Section: Introductionmentioning

confidence: 99%

Abortion occurs during double fertilization and ovule development in Paeonia ludlowii

et al. 2022

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Paeonia ludlowii (Stern & Taylor) D.Y.Hong, an endangered species, is indigenous to Tibet, China and propagated only by seed under natural conditions. Its natural reproduction is constrained by low fecundity. Excess seed abortion is a key factor restricting its natural reproduction, cultivation, introduction, and protection. Understanding the specific origin and occurrence of aborted ovules is important for the protection of offspring. Using serial sectioning analysis, we studied the process of pollination and fertilization of P. ludlowii and examined the characteristics of aborted ovules, developmental differences after flowering of normal and aborted ovules, and their ratios at different positions in P. ludlowii ovaries. During pollination, fertilization, and seed development, ovule abortion was frequent, with a random abortion position. There were three types of abortion, namely, abnormal pistil, sterile ovules, and embryo and endosperm abortions. Of these, embryo and endosperm abortions could be divided into early abortion and middle abortion. The early aborted ovules stopped growing on day 12, the endoblast and endosperm in the embryo sac aborted gradually. Furthermore, the shape of the embryo sac cavity changed. The volume of aborted ovules was significantly different from that of fertile ovules. At ripening, the external morphology of different types of aborted seeds was significantly different. The possible reasons for the abortion of the ovules are also discussed.

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Study on the Fatty Acids, Aromatic Compounds and Shelf Life of <i>Paeonia ludlowii</i> Kernel Oil

Cited by 11 publications

References 9 publications

Application of OXITEST for Prediction of Shelf-Lives of Selected Cold-Pressed Oils

Application of OXITEST for Prediction of Shelf-Lives of Selected Cold-Pressed Oils

Selected Instrumental Techniques Applied in Food and Feed: Quality, Safety and Adulteration Analysis

Abortion occurs during double fertilization and ovule development in Paeonia ludlowii

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