Natural content of animal and plant sterols, alpha-tocopherol and fatty acid profile in sheep milk and cheese from mountain farming

Martini, Mina; Salari, Federica; Buttau, Lorena; Altomonte, Iolanda

doi:10.1016/j.smallrumres.2021.106419

Cited by 14 publications

(5 citation statements)

References 39 publications

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“…In addition to meat, alpha-tocopherol also plays an important role in the maintenance and oxidative stability of milk and dairy products. Martini et al (2021) evaluated a herd of ewes from Sardinia with dairy aptitude on natural mountain pasture, and observed an alpha-tocopherol content of 3.24 mg 100 g −1 of fat in milk and 1.47 mg 100 g −1 of fat in cheese. This demonstrates the ability of alpha-tocopherol present in pasture to be deposited in the animal product or by-product, making it a food rich in bioactive compounds that are important for human health.…”

Section: Discussionmentioning

confidence: 99%

Tropical grass and legume pastures may alter lamb meat physical and chemical characteristics

Hampel

Poli

Joy

et al. 2021

Trop Anim Health Prod

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The present study assessed the influence of the type of the tropical pastures on lamb body weight (BW) gain and meat quality. Fifty-four lambs were allocated to three grazing pastures: (1) AG -Aruana grass (Panicum maximum cv. IZ-5); (2) PPpigeon pea legume (Cajanus cajan cv. Anão); and (3) CS -contiguous swards, half of the paddock with AG and half with PP. After 92 days of grazing, the lambs were slaughtered. Carcasses were evaluated and the longissimus muscle was collected to determine color, lipid profile, tocopherol concentrations, and lipid oxidation. Although the pastures present differences in the characteristics of nutritional quality, the animals did not show difference in BW gain. The results show that all forage presented similar concentration of alpha-tocopherol (137 ± 14.37 mg kg −1 of fresh matter), whereas total and condensed tannin contents were greater in PP, intermediate in CS, and the lowest in AG treatment (P = 0.0001). Meat α-tocopherol content was similar among treatments (P = 0.1392), with an average concentration close to the optimal level to reduce the meat oxidation. Meat from AG treatment had 45 and 25% lower n-6/n-3 ratio than meat from PP and CS treatments, respectively. The legume increases the unsaturated fatty acids and the grass can reduce the n6/n3 ratio. The level of condensed tannin concentration did show to have important effect on meat characteristics. Both tropical pastures studied can provide a high amount of alpha-tocopherol, generating a great potential to increase the concentration of this antioxidant in lamb's meat.

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Section: Discussionmentioning

confidence: 99%

Tropical grass and legume pastures may alter lamb meat physical and chemical characteristics

Hampel

Poli

Joy

et al. 2021

Trop Anim Health Prod

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“…In past decades, there has been a growing interest in the characterization of autochthonous breeds, as productions are strongly regionalized and contribute to the preservation of biodiversity and rural traditions, leading to environmental and economic sustainability [ 2 , 24 ]. This acquires great importance in the case of small dairy ruminants, since production not only involves important cultural and sociological aspects, but is also regarded by consumers as a source of high-quality products, addressing their concerns on the origin and nature of dairy foods [ 8 , 47 ].…”

Section: Discussionmentioning

confidence: 99%

Exploring Breed-Specific Milk Coagulation in Spanish Dairy Sheep: A Canonical Correlation Approach

Caballero-Villalobos,

Garzón,

Angón

et al. 2024

Animals

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The transformation of milk into cheese largely depends on the technological properties of the raw material, with breed being a crucial factor that influences both the composition and coagulation properties of the milk used for cheesemaking. This study uses canonical correlation analysis to explore the relationships between physicochemical traits and coagulation properties in milk from various Spanish breeds, aiming to identify both common and breed-specific patterns that impact milk technological aptitude. A total of 832 milk samples from Manchega, Assaf, Merino de Grazalema, and Merino de Los Pedroches breeds were analyzed. The milk characteristics investigated included pH, composition (fat, protein, lactose, total solids), and coagulation properties (curd firmness—A60, rennet clotting time—RCT, curd firming time—k20, and individual laboratory curd yield—ILCY). The results reveal a shared correlation structure across breeds and unique covariation patterns in some breeds that deviate from the general trend. While Assaf and Merino de Los Pedroches follow the common correlation pattern, Manchega and Merino de Grazalema exhibit distinct patterns. This research underscores the need for in-depth study and suggests that the dairy industry could benefit from shifting from the traditional focus on maximizing fat and protein for higher curd yields to considering technological traits for selective breeding.

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“…Common phytosterols include sitosterol, stigmasterol, and campesterol. Cholesterol is the primary animal sterol, while ergosterol is prevalent in fungi, primarily in molds and mushrooms ( Martini et al, 2021 ; Shi et al, 2021 ; Zhang et al, 2021 ). The diverse number of methyl groups attached to C-4, the length of the side chain on C-11, and the number and location of double bonds contribute to the greater diversity of phytosterols compared to the other two sterol types ( Kritchevsky and Chen, 2005 ; Marangoni and Poli, 2010 ).…”

Section: Phytochemistrymentioning

confidence: 99%

Traditional uses, phytochemistry, pharmacology, toxicity and clinical application of traditional Chinese medicine Cynoglossum amabile: a review

Fan,

Wang,

Zhang

et al. 2024

Front. Pharmacol.

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Cynoglossum amabile, a member of the Boraginaceae family, is a well-known traditional Chinese medicine and ethnomedicine known as Daotihu. Despite several studies confirming the presence of bioactive pyrrolizidine alkaloids such as amabiline, ambelline, echinatine, europine, and others in C. amabile, there has been no comprehensive review of its traditional uses, phytochemistry, and pharmacology thus far. This review was conducted by thoroughly examining the literature and analyzing network databases. It covers various aspects of C. amabile, including botanical characteristics, geographical distribution, traditional applications, phytochemistry, pharmacological activities, toxicology, and clinical applications. The results have shown that C. amabile has been traditionally used for medicinal, edible, and ornamental purposes in China for many centuries. The whole plant, root, and leaf of C. amabile are used by different ethnic groups, such as Lisu, Bai, Naxi, Yi, Jinuo, and Han, to treat malaria, hepatitis, dysentery, leucorrhea, tuberculosis cough, fracture, joint dislocation, trauma bleeding, and skin carbuncle abscess. A total of 47 chemical components, including alkaloids (pyrrolizidine alkaloids, PAs), sterols, organic acids, and saccharides, were isolated from C. amabile. Pharmacological studies show that the chemical extracts of C. amabile possess various biological activities, such as anti-inflammatory, anti-tumor, anti-microbial, cardiovascular effects, ganglionic action, and acetylcholinesterase inhibition. However, it is important to note that C. amabile exhibits hepatotoxicity, with its toxicity being linked to its primary PAs components. Although preliminary studies suggest potential applications in the treatment of prostate diseases and alopecia, further research is needed to validate these clinical uses. Our review highlights the traditional uses, phytochemistry, biological activity, toxicity, and clinical applications of C. amabile. It emphasizes the essential guiding role of the indigenous medicinal knowledge system in developing new drugs. Previous studies have shown that the phytochemical and pharmacological characteristics of C. amabile are significantly related to its traditional medicinal practices. Cynoglossum amabile has excellent market potential and can be further analyzed in terms of phytochemistry, pharmacology, and toxicology, which are critical for its clinical drug safety, quality evaluation, and resource development.

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Natural content of animal and plant sterols, alpha-tocopherol and fatty acid profile in sheep milk and cheese from mountain farming

Cited by 14 publications

References 39 publications

Tropical grass and legume pastures may alter lamb meat physical and chemical characteristics

Tropical grass and legume pastures may alter lamb meat physical and chemical characteristics

Exploring Breed-Specific Milk Coagulation in Spanish Dairy Sheep: A Canonical Correlation Approach

Traditional uses, phytochemistry, pharmacology, toxicity and clinical application of traditional Chinese medicine Cynoglossum amabile: a review

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