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Encapsulation of hydroxycitronellal in β-cyclodextrin and the characteristics of the inclusion complex

Zhu Guangyong, Xiao Zuobing, Zhou Rujun, Liu Junhua, Zhu Guangxu

Polish Journal of Chemical Technology

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2023

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Vol. 25, nr 1

20--27

EN

Hydroxycitronellal has been widely used in foods, beverages, perfumery and cosmetics. It can also be used to treat anxiety. The major drawbacks regarding the use of hydroxycitronellal are related to water insolubility, volatility, instability, and sensitization. To overcome these concerns, β-cyclodextrin was adopted as wall material to encapsulate hydroxycitronellal in this work. Hydroxycitronellal-β-cyclodextrin inclusion complex was prepared and the product was characterized. The interaction of hydroxycitronellal and β-cyclodextrin, and the assembly of hydroxycitronellal-β-cyclodextrin inclusion complex were investigated by molecular simulation (MM). The results showed that hydroxycitronellal loading capacity was 8.5%. The thermal stability and lastingness of hydroxycitronellal were im-proved by the formation of the inclusion complex. The minimum binding energy was –151.2 kJ/mol. Among the perpendicular, staggered parallel and ideally parallel orientation of the inclusion complexes, the minimum energy value was found for the staggered parallel arrangement. These basic data are useful to understand the interaction between hydroxycitronellal and β-cyclodextrin.

2

Evaluation of the Effect of Biostimulants on Palatability and Flesh Darkening of Raw and Cooked Tubers of Helianthus tuberosus

Mystkowska Iwona, Dmitrowicz Aleksandra

Journal of Ecological Engineering

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2023

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Vol. 24, nr 6

119--128

EN

The purpose of the conducted research was to evaluate the effect of four biostimulants on the palatability and darkening of the flesh of raw and cooked tubers according to a 9-degree scale of two varieties of 'Albik' and 'Rubik' of Jerusalem artichoke – JA (Helianthus tuberosus L.). Field trials were conducted in 2021–2022 with biostimulants on an individual farm in Międzyrzec Podlaski, Poland. The experiment was established using the randomized sub-block (split-plot) method. The effect of two factors was studied. The first-order factor was two varieties of Helianthus tuberosus: Albik and Rubik, and the second-order variants of biostimulant application: Kaishi, Maral, Nutrigreen AD, Vanadoo. The effectiveness of the application of individual biostimulants in the cultivation of two varieties of Jerusalem artichoke was compared with the control object (without the application of biostimulants). The methods of applying biostimulants did not change the palatability and darkening of the flesh of cooked tubers, and raw tubers after 1 hour, but had a significant effect on the darkening of the flesh of raw tubers 10 minutes after cutting. The raw and cooked flesh of the 'Albik' variety darkened the least, and this variety proved to be the most palatable on a scale of 1–9.

3

Study on discrimination of different grades of rapeseed oil based on flavor fingerprint

Chen Tong, Liu Chunyou, Chen Bin, Huang Yongchun

Acta Chromatographica

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2021

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Vol. 33, no. 3

295--301

EN

In this work, Gas chromatograph-Mass Spectrometry (GC-MS) combined with solid phase micro-extraction technology was used to analyze the difference of volatile organic compounds (VOCs) in rapeseed oil of different grades, and the relationship between changes of VOCs and refining process were also investigated in order to construct a non-linear model, which could realize rapid and accurate discrimination of different grade rapeseed oils. 124 rapeseed oil samples with different grades were collected and analyzed by GC-MS technology and 55 VOCs were identified and selected as variables to characterize the internal quality information of rapeseed oils. Then, principal component analysis (PCA) method was used to extract useful features and reduce data dimensionality, and finally a discriminant model was built using linear discriminant analysis (LDA) algorithm. The correct recognition rate of sample set was close to 94.59%. The results showed that the proposed method is promising in discriminating different grades of vegetable oils. Besides, it provides a theoretical basis for studying the relationship between VOCs composition and vegetable oil quality.

4

Związki lotne kształtujące smakowitość mięsa

Moczkowska M., Świderski F.

Postępy Techniki Przetwórstwa Spożywczego

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2012

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nr 1

87-92

PL

Jedną z najważniejszych składowych jakości produktów żywnościowych, a zwłaszcza mięsa i przetworów mięsnych jest smakowitość, gdyż w dużym stopniu warunkuje ona akceptację konsumenta i późniejsze decyzje zakupowe. Kształtowanie cech smakowo-zapachowych mięsa jest ściśle związane z ilością i właściwościami prekursorów występujących w surowym mięsie oraz procesem obróbki cieplej. Indukowane termicznie reakcje Maillarda i degradacja tłuszczu podczas obróbki termicznej prowadzą do powstania głównych komponentów smakowitości. Zakres związków smakowo-zapachowych obecnych w mięsie jest bardzo szeroki i obejmuje takie związki jak: węglowodory, aldehydy, ketony, alkohole, furany, pirole, pirydyny, pyrazyny, oksazole, tiazole, związki siarkowe oraz wiele innych.

EN

One of the major components of the food quality, especially meat and meat products, is flavor because it largely determines consumer acceptance and subsequent purchase decisions. Forming the meat flavor characteristic is closely related to the amount and properties of the precursors present in raw meat and heat treatment processes. Thermally induced Maillard reactions and lipid degradation lead to creation the major components of flavor. Range of flavor compounds present in meat is very broad and includes such compounds as hydrocarbons, aldehydes, ketones, alcohols, furans, pyrroles, pyridine, pyrazine, oxazole, thiazoles, sulfur compounds and many others.

5

Profile związków zapachowych powstających w różnych warunkach modelowej reakcji lizyny z rybozą

Biller E.

Postępy Techniki Przetwórstwa Spożywczego

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2012

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nr 2

70-75

PL

Celem artykułu jest przedstawienie opracowanych (w wyniku badań własnych) profili zapachowych charakteryzujących różne etapy reakcji Maillarda. Reakcje przeprowadzano w warunkach symulujących pieczenie/opiekanie mięsa. Reagentami były lizyna i ryboza. Podstawą do opracowania rozrzutu cech aromatycznych była analiza związków lotnych (GC-MS). Zamiast nazw substancji wykorzystano ich cechy sensoryczne. Uzyskano w ten sposób profil specyficznych "nut" zapachowych, które mogą stanowić wskaźnik stopnia zaawansowania reakcji nieenzymatycznego brązowienia. Profil taki można wykorzystać do przygotowywania szczegółowych deskryptorów sensorycznych odzwierciedlających cechy jakościowe mięsa.

EN

The aim of the investigations was to elaborate the profiles of flavor that have been obtained as a result of various stages of Maillard's reactions. These reactions were held in such conditions that imitated baking/broiling browning of meat. Lysine and ribose were used as reagents. The basis of the description of the distribution of aroma features was the analysis of the volatile compounds (by GC-MS method). The sensory features of the volatile compounds were used instead of the names of them. It was the way in which the specific profile of the single score of flavour has been obtained. These single flavour features can be the markers of the degree of the advancement of the non-enzymatic browning reaction. This profile could be used for preparing of the detailed sensory descriptors that reflect the features of meat's quality.