Effect of Various Cooking Methods on Nutritional Value, Antioxidant Activity and Bioavailability of Minerals in Wild Vegetables (Passiflora Foetida and Portulaca Oleracea) PDF Download
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Author: Yen Ching Lee
Publisher:
ISBN:
Category : Cooking (Vegetables)
Languages : en
Pages : 204
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Book Description
Author: Yen Ching Lee
Publisher:
ISBN:
Category : Cooking (Vegetables)
Languages : en
Pages : 204
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Book Description
Author: Harriet V. Kuhnlein
Publisher: Fao
ISBN:
Category : Business & Economics
Languages : en
Pages : 396
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Book Description
Today, globalisation and homogenisation have replaced local food cultures. The 12 case studies presented in this book show the wealth of knowledge in indigenous communities in diverse ecosystems, the richness of their food resources, the inherent strengths of the local traditional food systems, how people think about and use these foods, the influx of industrial and purchased food, and the circumstances of the nutrition transition in indigenous communities. The unique styles of conceptualising food systems and writing about them were preserved. Photographs and tables accompany each chapter.
Author: Thomas S. C. Li
Publisher: CRC Press
ISBN: 1420068733
Category : Technology & Engineering
Languages : en
Pages : 298
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Book Description
The modern synthetic diet, formulated to appeal to our inherent attraction to sugar, salt, fats, and calories at the expense of nutrition, leaves us over-fed and under-nourished. A considerable portion of chronic human diseases, including diabetes and heart disease, appear to be related largely to a diet that is inadequate in the essential vitamins
Author: Isabel C. F. R. Ferreira
Publisher: John Wiley & Sons
ISBN: 1118944623
Category : Technology & Engineering
Languages : en
Pages : 493
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Book Description
Wild Plants, Mushrooms and Nuts: Functional Properties and Food Applications is a compendium of current and novel research on the chemistry, biochemistry, nutritional and pharmaceutical value of traditional food products, namely wild mushrooms, plants and nuts, which are becoming more relevant in diets, and are especially useful for developing novel health foods and in modern natural food therapies. Topics covered will range from their nutritional value, chemical and biochemical characterization, to their multifunctional applications as food with beneficial effects on health, though their biological and pharmacological properties (antioxidant, antibacterial, antifungal, antitumor capacity, among others).
Author: Sanele Maxine Khumalo
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Introduction The incidence of non-communicable disease such as cancer, diabetes, and cardio vascular disease (CVD) is increasing. Major contributing factors are diets that are poor in minerals, vitamins and antioxidants. Leafy green vegetables (LGV) are an important source of these nutrients. In addition, indigenous LGV are drought resistant, robust and easy to cultivate than more exotic LGV such as spinach and cabbage. Little is known about the effects of cooking and digestion on the polyphenol, flavonoid and A̳YÌ8-carotene content of African LGV as well as the associated antioxidant activity. The aims of this study are firstly to evaluate the effect of pH, the digestive enzymes and the phase of digestion on the polyphenols, flavonoids and I̲℗ø-carotene content and associated antioxidant activity of LGVs, spinach, pumpkin, cowpea, amaranth and jute mallow. Then to determine whether following digestion the antioxidant properties of the African LGVs is better than spinach which is commercially and widely cultivated. Spinach, pumpkin, cowpea, amaranth and jute mallow leaves were cooked for 30 minutes, the water was discarded and the remaining solid cooked LGV which is usually consumed was subjected to two methods of digestion. The first referred to as gastrointestinal model of digestion (GI) of digestion consisted only of the stomach and intestinal phase of digestion, while the second model which was more complex included the oral, stomach and intestinal (OGI) phases of digestion. Raw, cooked, pH adjusted and digested samples at each phase of digestion were collected. For each sample the total polyphenol content (TPC), the total flavonoid content (TFC) was determined with the Folin-Ciocalteu method and aluminum chloride methods respectively. The A̳YÌ8-carotene content was determined with HPLC. Antioxidant activity was determined with the Trolox equivalent antioxidant capacity (TEAC), the 1, 1-diphenyla̲2́Ơ0́−2-picrylhydrazyl (DPPH) and the oxygen radical absorbency capacity (ORAC) assays. Cooking decreased significantly the TPC, TFC, TEAC and DPPH of spinach, pumpkin and cowpea, while the A̳YÌ8-carotene content of these LGV remained unchanged. For amaranth and jute mallow, cooking increased the TFC, A̳YÌ8-carotene and DPPH values, while their TPC and TEAC remained unchanged. All the LGVs decreased their antioxidant activity when measured by ORAC assay, except for jute mallow which was unchanged. During digestion, the pH controls had varying effects with different assays, as it did not change the TPC of spinach, pumpkin and cowpeas, but decreased that of amaranth while the TPC of jute mallow was higher. Overall, the gastric and intestinal digestion increased the antioxidant activity of all the LGVs as measured by the ORAC assay. TPC and TEAC increased significantly for spinach, pumpkin and cowpea, while their TFC remained unchanged and antioxidant activity measured with the DPPH assay was lower. For the amaranth and jute mallow the TFC was decreased, DPPH increased, while TEAC was unchanged. Except for pumpkin the A̳YÌ8-carotene content was reduced following digestion. In general, the effect of pH was minimal while digestive breakdown of the LGV matrix resulted in a significant release of molecules with antioxidant activity. In the OGI model of digestion, the oral phase of digestion contributed significantly to the levels of polyphenols and flavonoids released from the matrix. The effect on A̳YÌ8-carotene content was variable. Antioxidant activity for all LGV was increased (TEAC assay), variable (DPPH assay) and reduced (ORAC) assay. When considering the effect determined by the ORAC assay which is considered to be the physiologically the most relevant assay, using models that only simulate gastric and intestinal digestion may over estimate antioxidant activity. Compared to spinach the antioxidant properties of the LGVs, although in some instances statistically different, were similar to spinach. In conclusion, LGVs evaluated in this study retained to various degrees the antioxidant activity following digestion. The biggest contributing factor to these antioxidant properties was not pH but the ability of the digestive enzymes to break down the food matrix resulting the release of antioxidant molecules. Based on the findings of this study are that African LGV are an ideal source of bioactive molecules that can prevent diseases of the GIT and if bio- available can effectively reduce the risk of diabetes, cancer and CVD.
Author: N. Shakuntala Manay
Publisher: New Age International
ISBN: 8122422152
Category : East Indians
Languages : en
Pages : 29
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Book Description
Author: José L. Martinez
Publisher: CRC Press
ISBN: 0429841795
Category : Health & Fitness
Languages : en
Pages : 288
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Book Description
Ethnobotany includes the traditional use of plants in different fields like medicine and agriculture. This book incorporates important studies based on ethnobotany of different geographic zones. The book covers medicinaland aromatic plants, ethnopharmacology, bioactive molecules, plants used in cancer, hypertension, disorders of the central nervous system, and also as antipsoriatic, antibacterial, antioxidant, antiurolithiatic. The book will be useful for a diverse group of readers including plant scientists, pharmacologists, clinicians, herbalists, natural therapy experts, chemists, microbiologists, NGOs and those who are interested in traditional therapies.
Author: Sabu Abdulhameed
Publisher: Springer
ISBN: 9811035733
Category : Science
Languages : en
Pages : 447
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Book Description
This book is a compilation of articles on various aspects of bioresources and the processes employed for its judicious utilization. Biodiversity and conservation, food security, gene banks and repositories, laws governing biodiversity, bioprospecting, bioresources in traditional medicine and biodiversity mining are some of the important topics covered in the book. The unique contents of the book make it an important source of information for conservation scientists, academics, activists and to those who are actively involved in product oriented research from bioresources.
Author: Bernadette P. Resurreccion
Publisher: Routledge
ISBN: 1136565043
Category : Law
Languages : en
Pages : 286
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Book Description
This book is about the gender dimensions of natural resource exploitation and management, with a focus on Asia. It explores the uneasy negotiations between theory, policy and practice that are often evident within the realm of gender, environment and natural resource management, especially where gender is understood as a political, negotiated and contested element of social relationships. It offers a critical feminist perspective on gender relations and natural resource management in the context of contemporary policy concerns: decentralized governance, the elimination of poverty and themainstreaming of gender. Through a combination of strong conceptual argument and empirical material from a variety of political economic and ecological contexts (including Cambodia, China, Indonesia, Malaysia, Nepal, Thailand and Vietnam), the book examines gender-environment linkages within shifting configurations of resource access and control. The book will serve as a core resource for students of gender studies and natural resource management, and as supplementary reading for a wide range of disciplines including geography, environmental studies, sociology and development. It also provides a stimulating collection of ideas for professionals looking to incorporate gender issues within their practice in sustainable development. Published with IDRC.
Author: C. P. Khare
Publisher: Routledge
ISBN: 100070713X
Category : Medical
Languages : en
Pages : 314
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Book Description
This groundbreaking work calls for the overhaul of traditional Ayurveda and its transformation into a progressive, evidence-based practice. This book begins by looking back at the research of the last three centuries, Indian medicinal plants, and Ayurveda in a twenty-first-century context. The first part of this book explores the limitations of contemporary Ayurvedic pharmacognosy and pharmacology, discussing the challenges the practice faces from research and clinical trials. It makes a compelling argument for the necessity of change. The second part of the book defines and elaborates upon a new, scientific path, taking the reader from identification of the herb through all stages of drug development. An essential tool for herbal drug development, this text is designed for knowledgeable students, practitioners, and scholars of Ayurveda, pharmacy, and herbal medicine.
