Libera Justyna, Latoch Agnieszka, Wójciak Karolina Maria
Department of Animal Raw Materials Technology, Faculty of Food Science and Biotechnology, University of Life Sciences in Lublin, Skromna Street 8, 20-704 Lublin, Poland.
Foods. 2020 Jan 19;9(1):103. doi: 10.3390/foods9010103.
Grape seeds have been evaluated for use as food ingredients with stabilizing effects in meat technology. A pork neck, inoculated with probiotic monoculture ( LOCK900), was used as the matrix. The study compared the antioxidant potential of grape seed extract to sodium ascorbate. Three experimental variants of the products were prepared: With grape seed extract, with sodium ascorbate, and without additives. The meat ripened for two months, and during this period of time biophysicochemical analyses (product color, pH, number of lactic acid bacteria, content of free fatty acids, and thiobarbituric acid reactive substances) were carried out. It was found that the extract inhibited lipid hydrolysis occurring in the neck (1% of oleic acid) and limited oxidative processes (0.46 mg MDA kg), with efficacy similar to that of sodium ascorbate (0.9% of oleic acid and 0.53 mg MDA kg, respectively). No limitation of the desired lactic acid bacteria growth (approximately 7 log cfu g) was noticed in the meat samples with the extract. The results are optimistic because they indicate that not only is it possible to produce fermented pork neck inoculated with probiotic, but there are also no obstacles to utilizing grape seed extract as a natural antioxidant in this technology.
葡萄籽已被评估用作肉类加工中具有稳定作用的食品成分。以接种益生菌单一培养物(LOCK900)的猪颈肉作为基质。该研究比较了葡萄籽提取物与抗坏血酸钠的抗氧化潜力。制备了产品的三个实验变体:添加葡萄籽提取物、添加抗坏血酸钠以及不添加任何添加剂。肉成熟了两个月,在此期间进行了生物物理化学分析(产品颜色、pH值、乳酸菌数量、游离脂肪酸含量和硫代巴比妥酸反应性物质)。结果发现,该提取物抑制了猪颈肉中发生的脂质水解(油酸含量为1%),并限制了氧化过程(丙二醛含量为0.46 mg/kg),其效果与抗坏血酸钠相似(分别为油酸含量0.9%和丙二醛含量0.53 mg/kg)。在添加提取物的肉样中未发现对所需乳酸菌生长(约7 log cfu/g)有抑制作用。这些结果是乐观的,因为它们表明不仅有可能生产接种益生菌的发酵猪颈肉,而且在该技术中使用葡萄籽提取物作为天然抗氧化剂也没有障碍。